Kisor v. Wilkie

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certiorari to the united states court of appeals for the federal circuit

No. 18–15. Argued March 27, 2019—Decided June 26, 2019

Petitioner James Kisor, a Vietnam War veteran, frst sought disability ben- efts from the Department of Veterans Affairs (VA) in 1982, alleging that he had developed post-traumatic stress disorder from his military service. The agency denied his initial request, but in 2006, Kisor moved to reopen his claim. The VA this time agreed he was eligible for bene- fts, but it granted those benefts only from the date of his motion to reopen, not (as Kisor had requested) from the date of his frst appli- cation. The Board of Veterans' Appeals—a part of the VA—affrmed that retroactivity decision, based on its interpretation of an agency rule governing such claims. The Court of Appeals for Veterans Claims affrmed.

The Federal Circuit also affrmed, but it did so by applying a doctrine called Auer (or sometimes, Seminole Rock) deference. See Auer v.

Robbins, 519 U. S. 452; Bowles v. Seminole Rock & Sand Co., 325 U. S.

410. Under that doctrine, this Court has long deferred to an agency's

reasonable reading of its own genuinely ambiguous regulations. The Court of Appeals concluded that the VA regulation at issue was ambigu- ous, and it therefore deferred to the Board's interpretation of the rule.

Kisor now asks the Court to overrule Auer, as well as its predecessor Seminole Rock, discarding the deference those decisions give to agencies.

Held: The judgment is vacated and remanded.

869 F. 3d 1360, vacated and remanded.

Justice Kagan delivered the opinion of the Court with respect to Parts I, II–B, III–B, and IV, holding that Auer and Seminole Rock are not overruled. Pp. 573–580, 586–590.

(a) This Court's deference doctrine is rooted in a presumption that Congress intended for courts to defer to agencies when they interpret their own ambiguous rules. The Court adopts that presumption for a set of reasons related to the comparative attributes of courts and agen- cies in answering interpretive questions. But when the reasons for the presumption do not hold up, or when countervailing reasons outweigh them, courts should not give deference to an agency's reading. The Court has thus cabined Auer's scope in varied and critical ways.

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First and foremost, a court should not afford Auer deference unless, after exhausting all the “traditional tools” of construction, Chevron

U. S. A. Inc. v. Natural Resources Defense Council, Inc., 467 U. S. 837,

843, n. 9, the regulation is genuinely ambiguous. A court must care- fully consider the text, structure, history, and purpose of a regulation before resorting to deference. If genuine ambiguity remains, the agency's reading must still fall “within the bounds of reasonable inter- pretation.” Arlington v. FCC, 569 U. S. 290, 296.

And even then, not every reasonable agency reading of a genuinely ambiguous rule should receive Auer deference. Rather, a court must also make an independent inquiry into whether the character and con- text of the agency interpretation entitles it to controlling weight. See,

e. g., Christopher v. SmithKline Beecham Corp., 567 U. S. 142, 155. The

inquiry along this dimension does not reduce to an exhaustive test, but the Court has laid out some especially important markers for identifying when Auer deference is and is not appropriate. To begin with, the regulatory interpretation must be the agency's authoritative or offcial position, rather than any more ad hoc statement not refecting the agency's views. Next, the agency's interpretation must in some way implicate its substantive expertise, as the basis for deference ebbs when the subject matter of a dispute is distant from the agency's ordinary duties. Finally, an agency's reading of a rule must refect its “fair and considered judgment.” Auer, 519 U. S., at 462. A court should decline to defer, for example, to a merely “ `convenient litigating position,' ” Christopher, 567 U. S., at 155, or to a new interpretation that creates “unfair surprise” to regulated parties, Long Island Care at Home, Ltd.

v. Coke, 551 U. S. 158, 170. Pp. 573–580.

(b) Stare decisis cuts strongly against overruling Auer. Adherence to precedent is “a foundation stone of the rule of law,” Michigan v. Bay Mills Indian Community, 572 U. S. 782, 798, and any departure from the doctrine demands “special justifcation,” Halliburton Co. v. Erica

P. John Fund, Inc., 573 U. S. 258, 266. That is even more than usually

so in the circumstances here. First, Kisor asks the Court to overrule a “long line of precedents”—each one reaffrming the rest and going back 75 years or more. Bay Mills, 572 U. S., at 798. Second, because Auer deference pervades the whole corpus of administrative law, aban- doning it would cast doubt on many settled constructions of rules. And third, even if the Court is wrong about Auer, “Congress remains free to alter what [the Court has] done.” Patterson v. McLean Credit Union, 491 U. S. 164, 172–173. For approaching a century, Congress has let this deference regime work side-by-side with both the Administrative Procedure Act (APA) and the many statutes delegating rulemaking

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power to agencies. This Court would thus need a particularly “special justifcation” to now reverse Auer.

Kisor offers nothing of that ilk. Nearly all of his arguments relate to whether the doctrine is wrong or poorly reasoned. He does not claim that Auer deference is “unworkable,” a traditional basis for overruling a case, Patterson, 491 U. S., at 173, or point to changes in legal rules that make Auer a “doctrinal dinosaur,” Kimble v. Marvel Entertain- ment, LLC, 576 U. S. 446, 458. Instead, his lone special justifcation is that the administrative state has evolved substantially since this Court decided Seminole Rock in 1945. It is true that agencies have far-reaching infuence today; that is one reason the Court has taken care to reinforce the limits of Auer deference. But it is no answer to the growth of agencies for courts to take over their expertise-based, policy- making functions. Pp. 586–589.

(c) Turning to Kisor's own case, a remand is necessary for two rea- sons. First, the Federal Circuit jumped the gun in declaring the VA's regulation ambiguous before bringing all its interpretive tools to bear on the question. Second, the Federal Circuit assumed too fast that Auer deference should apply in the event of genuine ambiguity, rather than assessing whether the interpretation is of the sort that Congress would want to receive deference. On remand, the Court of Appeals must reconsider whether Auer deference is warranted, bearing in mind the principles outlined in this opinion. Pp. 589–590.

Justice Kagan, joined by Justice Ginsburg, Justice Breyer, and

(a) Auer deference is rooted in a presumption that Congress would generally want the agency to play the primary role in resolving regula- tory ambiguities. See Martin v. Occupational Safety and Health Re- view Comm'n, 499 U. S. 144, 151–153. In part, the presumption arises because the agency that promulgated a rule is in the “better position [to] reconstruct” its original meaning. Id., at 152. In still greater measure, the presumption stems from an awareness that resolving genu- ine regulatory ambiguities often “ `entail[s] the exercise of judgment grounded in policy concerns,' ” an area where agencies have a compara- tive advantage over courts. Thomas Jefferson Univ. v. Shalala, 512

U. S. 504, 512. Finally, the presumption refects the well-known bene-

fts of uniformity in interpreting ambiguous rules. Auer deference pro- motes “resolving interpretive issues by uniform administrative decision, rather than piecemeal by litigation,” Ford Motor Credit Co. v. Milhollin, 444 U. S. 555, 568. Pp. 566–573.

(b) None of Kisor's arguments provide good reason to reconsider Auer deference. First, he claims that Auer is inconsistent with the APA's judicial review provision, which instructs reviewing courts to

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“determine the meaning” of an agency action. 5 U. S. C. § 706. Even when a court defers to a regulatory reading, however, it acts consist- ently with Section 706. That provision does not specify the standard of review a court should use in “determin[ing] the meaning” of an am- biguous rule. This Court thus presumes that Congress would want courts to do so by reviewing agency interpretations for reasonableness.

That is especially so because Section 706, when enacted, was understood to restate the present law of judicial review—which would have included deference under Seminole Rock. Nor does Auer circumvent the APA's rulemaking requirements, which require regulations to go through no- tice and comment before they can bind third parties. Even though a court might defer to an agency's interpretation of a regulation, the agency's interpretation itself never forms the basis for an enforcement action. Rather, an agency bringing an enforcement action must always rely on a rule that went through notice and comment. And courts, in turn, always retain the fnal authority to approve—or not—an agency's reading of that notice-and-comment rule. See Perez v. Mortgage Bank- ers Assn., 575 U. S. 92, 104, n. 4.

Kisor's policy and constitutional arguments fail just as roundly. As a policy matter, he contends that Auer encourages agencies to issue vague and open-ended regulations, confdent that they can later impose whatever interpretation of those rules they prefer. But no real evidence backs up that assertion and strong incentives cut in the opposite direction.

Finally, Kisor asserts that Auer deference violates “separation- of-powers principles” by vesting both legislative and judicial functions in one branch. If that objection is to agencies' usurping the interpre- tive role of courts, Auer—when properly understood and applied—does no such thing. And if the objection is instead to the supposed commin- gling of functions within an agency, this Court has explained that even when agency “activities take `legislative' and `judicial' forms,” they con- tinue to be “exercises of the `executive Power,' ” and thus raise no consti- tutional concerns. Arlington, 569 U. S., at 304–305, n. 4. Pp. 580–586.

Kagan, J., announced the judgment of the Court and delivered the opin- ion of the Court with respect to Parts I, II–B, III–B, and IV, in which Roberts, C. J., and Ginsburg, Breyer, and Sotomayor, JJ., joined, and an opinion with respect to Parts II–A and III–A, in which Ginsburg, Breyer, and Sotomayor, JJ., joined. Roberts, C. J., fled an opinion concurring in part, post, p. 590. Gorsuch, J., fled an opinion concurring in the judgment, in which Thomas, J., joined, in which Kavanaugh, J., joined as to Parts I, II, III, IV, and V, and in which Alito, J., joined as to Parts I, II, and III, post, p. 592. Kavanaugh, J., fled an opinion concur- ring in the judgment, in which Alito, J., joined, post, p. 631.

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Counsel

Paul W. Hughes argued the cause for petitioner. With him on the briefs were Michael B. Kimberly, Andrew J. Pin- cus, Charles A. Rothfeld, E. Brantley Webb, Kenneth M.

Carpenter, and Eugene R. Fidell.

Solicitor General Francisco argued the cause for respond- ent. With him on the brief were Assistant Attorney General Hunt, Deputy Solicitor General Wall, Deputy Assistant At- torney General Mooppan, Matthew Guarnieri, Mark B.

Stern, and Daniel Aguilar.*

*Briefs of amici curiae urging reversal were fled for the State of Utah et al. by Sean D. Reyes, Attorney General of Utah, Tyler R. Green, Solici- tor General, and Stanford E. Purser, Deputy Solicitor General, and by the Attorneys General for their respective States as follows: Steve Marshall of Alabama, Kevin G. Clarkson of Alaska, Mark Brnovich of Arizona, Leslie Rutledge of Arkansas, Christopher M. Carr of Georgia, Curtis T.

Hill, Jr., of Indiana, Derek Schmidt of Kansas, Jeff Landry of Louisiana, Eric S. Schmitt of Missouri, Doug Peterson of Nebraska, Dave Yost of Ohio, Mike Hunter of Oklahoma, Alan Wilson of South Carolina, Ken Paxton of Texas, and Patrick Morrisey of West Virginia; for the American Federation of Labor and Congress of Industrial Organizations by Harold

Martin S. Kaufman; for the Cato Institute et al. by Ilya Shapiro and John J. Vecchione; for the Center for Constitutional Jurisprudence by John

ance by Rae T. Vann and Michael P. Bracken; for the Chamber of Com- merce of the United States of America et al. by Mark W. Mosier, Kevin

F. King, and Daniel Saphire; for the National Association of Home Build-

ers et al. by Evan A. Young, Megan Berge, Jared Wigginton, Amy Chai, Thomas J. Ward, Karen R. Harned, Elizabeth Milito, Scott Yager, Ellen Steen, Travis Cushman, Peter C. Tolsdorf, and Richard Moskowitz; for the National Immigrant Justice Center et al. by Jean-Claude André and Charles Roth; for the National Organization of Veterans' Advocates, Inc., et al. by Roman Martinez, Benjamin W. Snyder, Kevin J. Bartlett, Chris- topher J. Clay, Leonard J. Selfon, and Linda E. Blauhut; for the National Right to Work Legal Defense Foundation, Inc., by Raymond J. La- Jeunesse, Jr.; for the National Veterans Legal Services Program et al. by Amy Mason Saharia, Liam J. Montgomery, William T. Marks, and Bar- ton F. Stichman; for the New Civil Liberties Alliance by Jonathan F. Mitchell and Steve Simpson; for the Pacifc Legal Foundation et al. by Anthony L. François, Damien M. Schiff, Daniel M. Ortner, and Todd F.

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Opinion of the Court

Justice Kagan announced the judgment of the Court and delivered the opinion of the Court with respect to Parts I, II–B, III–B, and IV, and an opinion with respect to Parts II– A and III–A, in which Justice Ginsburg, Justice Breyer, and Justice Sotomayor join.

This Court has often deferred to agencies' reasonable readings of genuinely ambiguous regulations. We call that practice Auer deference, or sometimes Seminole Rock defer- ence, after two cases in which we employed it. See Auer v.

Robbins, 519 U. S. 452 (1997); Bowles v. Seminole Rock & Sand Co., 325 U. S. 410 (1945). The only question presented here is whether we should overrule those decisions, discard- ing the deference they give to agencies. We answer that question no. Auer deference retains an important role in construing agency regulations. But even as we uphold it, we reinforce its limits. Auer deference is sometimes appro- priate and sometimes not. Whether to apply it depends on a range of considerations that we have noted now and again, but compile and further develop today. The deference doc-

Gaziano; for the Southeastern Legal Foundation et al. by Kimberly S.

Hermann, Braden Boucek, Robert Henneke, Jonathan Riches, and Aditya Dynar; for State and Local Government Associations by Allyson N. Ho, Kathryn Cherry, Bradley G. Hubbard, and Lisa E. Soronen; for the Util- ity Air Regulatory Group by Elbert Lin, F. William Brownell, Henry V.

Nickel, and Nash E. Long III; for the Washington Legal Foundation by Corbin K. Barthold and Cory L. Andrews; for Ronald A. Cass et al. by Mr. Cass, pro se; for Stephen C. Connaker et al. by William J. Brown, Jr., and Matthew K. Wegner; for Jeremy C. Doerre by Mr. Doerre, pro se; for Jeff S. Howard by Shawn T. Welch; and for Thomas Merrill by William

M. Jay and Mr. Merrill, pro se.

Briefs of amici curiae urging affrmance were fled for Administrative Law Scholars by Donald B. Verrilli, Jr., and Ronald M. Levin and Gil- lian E. Metzger, both pro se; and for Sen. Sheldon Whitehouse by Mr.

Whitehouse, pro se, and Jason P. Steed.

Briefs of amici curiae were fled for Professors of Administrative Law and Federal Regulation by Vincent Levy, Daniel M. Sullivan, Gregory Dubinsky, and Samuel Estreicher, pro se; and for Public Citizen by Scott

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Opinion of the Court

trine we describe is potent in its place, but cabined in its scope. On remand, the Court of Appeals should decide whether it applies to the agency interpretation at issue.

We begin by summarizing how petitioner James Kisor's case made its way to this Court. Truth be told, nothing recounted in this Part has much bearing on the rest of our decision. The question whether to overrule Auer does not turn on any single application, whether right or wrong, of that decision's deference doctrine. But a recitation of the facts and proceedings below at least shows how the question presented arose.

Kisor is a Vietnam War veteran seeking disability benefts from the Department of Veterans Affairs (VA). He frst ap- plied in 1982, alleging that he had developed post-traumatic stress disorder (PTSD) as a result of his participation in a military action called Operation Harvest Moon. The report of the agency's evaluating psychiatrist noted Kisor's involve- ment in that battle, but found that he “d[id] not suffer from PTSD.” App. 12, 14. The VA thus denied Kisor benefts.

There matters stood until 2006, when Kisor moved to reopen his claim. Based on a new psychiatric report, the VA this time agreed that Kisor suffered from PTSD. But it granted him benefts only from the date of his motion to reopen, rather than (as he requested) from the date of his frst application.

The Board of Veterans' Appeals—a part of the VA, repre- sented in Kisor's case by a single administrative judge— affrmed that timing decision, based on its interpretation of an agency rule. Under the VA's regulation, the agency could grant Kisor retroactive benefts if it found there were “relevant offcial service department records” that it had not considered in its initial denial. See 38 CFR § 3.156(c)(1) (2013). The Board acknowledged that Kisor had come up with two new service records, both confrming his participa-

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tion in Operation Harvest Moon. But according to the Board, those records were not “relevant” because they did not go to the reason for the denial—that Kisor did not have PTSD. See App. to Pet. for Cert. 43a (“[The] documents were not relevant to the decision in May 1983 because the basis of the denial was that a diagnosis of PTSD was not warranted, not a dispute as to whether or not the Veteran engaged in combat”). The Court of Appeals for Veterans Claims, an independent Article I court that initially reviews the Board's decisions, affrmed for the same reason.

The Court of Appeals for the Federal Circuit also affrmed, but it did so based on deference to the Board's interpretation of the VA rule. See Kisor v. Shulkin, 869 F. 3d 1360, 1368 (2017). Kisor had argued to the Federal Circuit that to count as “relevant,” a service record need not (as the Board thought) “counter[ ] the basis of the prior denial”; instead, it could relate to some other criterion for obtaining disability benefts. Id., at 1366 (internal quotation marks omitted).

The Federal Circuit found the regulation “ambiguous” as be- tween the two readings. Id., at 1367. The rule, said the court, does not specifcally address “whether `relevant' rec- ords are those casting doubt on the agency's prior [rationale or] those relating to the veteran's claim more broadly.” Ibid. So how to choose between the two views? The court continued: “Both parties insist that the plain regulatory lan- guage supports their case, and neither party's position strikes us as unreasonable.” Id., at 1368. Because that was so, the court believed Auer deference appropriate: The agency's construction of its own regulation would govern un- less “plainly erroneous or inconsistent with the VA's regula- tory framework.” Ibid. (internal quotation marks omitted).

Applying that standard, the court upheld the Board's read- ing—and so approved the denial of retroactive benefts.

We then granted certiorari to decide whether to overrule Auer and (its predecessor) Seminole Rock. 586 U. S. 1050 (2018).

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Before addressing that question directly, we spend some time describing what Auer deference is, and is not, for. You might view this Part as “just background” because we have made many of its points in prior decisions. But even if so, it is background that matters. For our account of why the doctrine emerged—and also how we have limited it—goes a long way toward explaining our view that it is worth preserving.

Begin with a familiar problem in administrative law: For various reasons, regulations may be genuinely ambiguous.

They may not directly or clearly address every issue; when applied to some fact patterns, they may prove susceptible to more than one reasonable reading. Sometimes, this sort of ambiguity arises from careless drafting—the use of a dangling modifer, an awkward word, an opaque construc- tion. But often, ambiguity refects the well-known limits of expression or knowledge. The subject matter of a rule “may be so specialized and varying in nature as to be impossible”—or at any rate, impracticable—to capture in its every detail. SEC v. Chenery Corp., 332 U. S. 194, 203 (1947). Or a “problem[ ] may arise” that the agency, when drafting the rule, “could not [have] reasonably foresee[n].” Id., at 202. Whichever the case, the result is to create real uncertainties about a regulation's meaning.

• In a rule issued to implement the Americans with Disa- bilities Act (ADA), the Department of Justice requires theaters and stadiums to provide people with disabilities “lines of sight comparable to those for members of the general public.” 28 CFR pt. 36, App. A, p. 563 (1996).

Must the Washington Wizards construct wheelchair seating to offer lines of sight over spectators when they rise to their feet? Or is it enough that the facility offers

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comparable views so long as everyone remains seated?

See Paralyzed Veterans of Am. v. D. C. Arena L. P., 117

F. 3d 579, 581–582 (CADC 1997).

• The Transportation Security Administration (TSA) re- quires that liquids, gels, and aerosols in carry-on bag- gage be packed in containers smaller than 3.4 ounces and carried in a clear plastic bag. Does a traveler have to pack his jar of truffe pâté in that way? See Laba v.

Copeland, 2016 WL 5958241, *1 (WDNC, Oct. 13, 2016). • The Mine Safety and Health Administration issues a rule requiring employers to report occupational diseases within two weeks after they are “diagnosed.” 30 CFR § 50.20(a) (1992). Do chest X-ray results that “scor[e]” above some level of opacity count as a “diagnosis”?

What level, exactly? See American Min. Congress v.

Mine Safety and Health Admin., 995 F. 2d 1106, 1107–

• An FDA regulation gives pharmaceutical companies ex- clusive rights to drug products if they contain “no active moiety that has been approved by FDA in any other” new drug application. 21 CFR § 314.108(a) (2010). Has a company created a new “active moiety” by joining a previously approved moiety to lysine through a non- ester covalent bond? See Actavis Elizabeth LLC v.

FDA, 625 F. 3d 760, 762–763 (CADC 2010); Tr. of Oral Arg. 12, 35.1

• Or take the facts of Auer itself. An agency must decide whether police captains are eligible for overtime under the Fair Labor Standards Act. According to the agency's regulations, employees cannot receive overtime

1 In case you're wondering, the regulatory defnition of active moiety is “[t]he molecule or ion, excluding those appended portions of the molecule that cause the drug to be an ester, salt (including a salt with hydrogen or coordination bonds), or the noncovalent derivative (such as a complex, che- late, or clathrate) of the molecule, responsible for the physiological or phar- macological action of the drug substance.” 21 CFR § 314.3(b) (2018).

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if they are paid on a “salary basis.” 29 CFR § 541.118(a) (1996). And in deciding whether an employee is sala- ried, one question is whether his pay is “subject to re- duction” based on performance. Ibid. A police depart- ment's manual informs its offcers that their pay might be docked if they commit a disciplinary infraction. Does that fact alone make them “subject to” pay deductions?

Or must the department have a practice of docking off- cer pay, so that the possibility of that happening is more than theoretical? 519 U. S., at 459–462.

In each case, interpreting the regulation involves a choice between (or among) more than one reasonable reading. To apply the rule to some unanticipated or unresolved situation, the court must make a judgment call. How should it do so?

In answering that question, we have often thought that a court should defer to the agency's construction of its own regulation. For the last 20 or so years, we have referred to that doctrine as Auer deference, and applied it often.2 But the name is something of a misnomer. Before the doctrine was called Auer deference, it was called Seminole Rock deference—for the 1945 decision in which we declared that when “the meaning of [a regulation] is in doubt,” the agency's interpretation “becomes of controlling weight unless it is plainly erroneous or inconsistent with the regulation.” 325

U. S., at 414.3 And Seminole Rock itself was not built on

2 See, e. g., PLIVA, Inc. v. Mensing, 564 U. S. 604, 613 (2011); Chase Bank USA, N. A. v. McCoy, 562 U. S. 195, 208–210 (2011); Coeur Alaska, Inc. v.

Southeast Alaska Conservation Council, 557 U. S. 261, 274–275 (2009); Riegel v. Medtronic, Inc., 552 U. S. 312, 328 (2008); Long Island Care at Home, Ltd. v. Coke, 551 U. S. 158, 171 (2007); Washington State Dept. of Social and Health Servs. v. Guardianship Estate of Keffeler, 537 U. S. 371, 387–388 (2003).

3 Our (pre-Auer) decisions applying Seminole Rock deference are legion.

See, e. g., Shalala v. Guernsey Memorial Hospital, 514 U. S. 87, 94–95 (1995); Thomas Jefferson Univ. v. Shalala, 512 U. S. 504, 512 (1994); Stin- son v. United States, 508 U. S. 36, 44–45 (1993); INS v. National Center for Immigrants' Rights, Inc., 502 U. S. 183, 189–190 (1991); Robertson v.

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sand. Deference to administrative agencies traces back to the late nineteenth century, and perhaps beyond. See United States v. Eaton, 169 U. S. 331, 343 (1898) (“The inter- pretation given to the regulations by the department charged with their execution . . . is entitled to the greatest weight”); see Brief for Administrative Law Scholars as Amici Curiae 5, n. 3 (collecting early cases); Brief for AFL– CIO as Amicus Curiae 8 (same).

We have explained Auer deference (as we now call it) as rooted in a presumption about congressional intent—a pre- sumption that Congress would generally want the agency to play the primary role in resolving regulatory ambiguities.

See Martin v. Occupational Safety and Health Review Comm'n, 499 U. S. 144, 151–153 (1991). Congress, we have pointed out, routinely delegates to agencies the power to im- plement statutes by issuing rules. See id., at 151. In doing so, Congress knows (how could it not?) that regulations will sometimes contain ambiguities. See supra, at 566. But Congress almost never explicitly assigns responsibility to deal with that problem, either to agencies or to courts. Hence the need to presume, one way or the other, what Congress would want. And as between those two choices, agencies have gotten the nod. We have adopted the presumption— though it is always rebuttable—that “the power authorita- tively to interpret its own regulations is a component of the

Methow Valley Citizens Council, 490 U. S. 332, 358–359 (1989); Mullins Coal Co. of Va. v. Director, Offce of Workers' Compensation Programs, 484 U. S. 135, 159 (1987); Lyng v. Payne, 476 U. S. 926, 939 (1986); Fidelity Fed. Sav. & Loan Assn. v. De la Cuesta, 458 U. S. 141, 158, n. 13 (1982); Blanding v. DuBose, 454 U. S. 393, 401 (1982) (per curiam); Ford Motor Credit Co. v. Milhollin, 444 U. S. 555, 566 (1980); United States v. Lario- noff, 431 U. S. 864, 872 (1977); Northern Indiana Public Service Co. v.

Porter County Chapter of Izaak Walton League of America, Inc., 423

U. S. 12, 15 (1975) (per curiam); Ehlert v. United States, 402 U. S. 99, 105

(1971); INS v. Stanisic, 395 U. S. 62, 72 (1969); Thorpe v. Housing Author- ity of Durham, 393 U. S. 268, 276 (1969); Udall v. Tallman, 380 U. S. 1, 16–17 (1965).

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agency's delegated lawmaking powers.” Martin, 499 U. S., at 151. Or otherwise said, we have thought that when granting rulemaking power to agencies, Congress usually in- tends to give them, too, considerable latitude to interpret the ambiguous rules they issue.

In part, that is because the agency that promulgated a rule is in the “better position [to] reconstruct” its original meaning. Id., at 152. Consider that if you don't know what some text (say, a memo or an e-mail) means, you would prob- ably want to ask the person who wrote it. And for the same reasons, we have thought, Congress would too (though the person is here a collective actor). The agency that “wrote the regulation” will often have direct insight into what that rule was intended to mean. Mullins Coal Co. of Va. v. Di- rector, Offce of Workers' Compensation Programs, 484 U. S. 135, 159 (1987). The drafters will know what it was sup- posed to include or exclude or how it was supposed to apply to some problem. To be sure, this justifcation has its limits.

It does not work so well, for example, when the agency failed to anticipate an issue in crafting a rule (e. g., if the agency never thought about whether and when chest X-rays would count as a “diagnosis”). See supra, at 567. Then, the agency will not be uncovering a specifc intention; at most (though this is not nothing), it will be offering insight into the analogous issues the drafters considered and the purposes they de- signed the regulation to serve. And the defense works yet less well when lots of time has passed between the rule's issuance and its interpretation—especially if the interpreta- tion differs from one that has come before. All that said, the point holds good for a signifcant category of “contempo- raneous” readings. Lyng v. Payne, 476 U. S. 926, 939 (1986).

Want to know what a rule means? Ask its author.

In still greater measure, the presumption that Congress intended Auer deference stems from the awareness that resolving genuine regulatory ambiguities often “entail[s] the exercise of judgment grounded in policy concerns.”

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Thomas Jefferson Univ. v. Shalala, 512 U. S. 504, 512 (1994) (internal quotation marks omitted). Return to our TSA ex- ample. See supra, at 567. In most of their applications, terms like “liquids” and “gels” are clear enough.

(Traveler checklist: Pretzels OK; water not.) But resolving the uncer- tain issues—the truffe pâtés or olive tapenades of the

Why does TSA ban liquids and gels in the frst instance?

What makes them dangerous? Can a potential hijacker use pâté jars in the same way as soda cans? Or take the less specialized-seeming ADA example. See supra, at 566–567.

It is easy enough to know what “comparable lines of sight” means in a movie theater—but more complicated when, as in sports arenas, spectators sometimes stand up. How costly is it to insist that the stadium owner take that sporadic be- havior into account, and is the viewing value received worth the added expense? That cost-benefit calculation, too, sounds more in policy than in law. Or fnally, take the more technical “moiety” example. See supra, at 567. Or maybe, don't. If you are a judge, you probably have no idea of what the FDA's rule means, or whether its policy is implicated when a previously approved moiety is connected to lysine through a non-ester covalent bond.

And Congress, we have thought, knows just that: It is at- tuned to the comparative advantages of agencies over courts in making such policy judgments. Agencies (unlike courts) have “unique expertise,” often of a scientifc or technical na- ture, relevant to applying a regulation “to complex or chang- ing circumstances.” Martin, 499 U. S., at 151; see Thomas Jefferson, 512 U. S., at 512. Agencies (unlike courts) can conduct factual investigations, can consult with affected par- ties, can consider how their experts have handled similar is- sues over the long course of administering a regulatory pro- gram. See Long Island Care at Home, Ltd. v. Coke, 551

U. S. 158, 167–168 (2007). And agencies (again unlike courts)

have political accountability, because they are subject to the

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supervision of the President, who in turn answers to the pub- lic. See Free Enterprise Fund v. Public Company Ac- counting Oversight Bd., 561 U. S. 477, 499 (2010); Pauley v.

BethEnergy Mines, Inc., 501 U. S. 680, 696 (1991) (discussing as a matter of democratic accountability the “proper roles of the political and judicial branches” in flling regulatory gaps).

It is because of those features that Congress, when frst enacting a statute, assigns rulemaking power to an agency and thus authorizes it to fll out the statutory scheme. And so too, when new issues demanding new policy calls come up within that scheme, Congress presumably wants the same agency, rather than any court, to take the laboring oar.

Finally, the presumption we use refects the well-known benefts of uniformity in interpreting genuinely ambiguous rules. We have noted Congress's frequent “preference for resolving interpretive issues by uniform administrative deci- sion, rather than piecemeal through litigation.” Ford Motor Credit Co. v. Milhollin, 444 U. S. 555, 568 (1980). That pref- erence may be strongest when the interpretive issue arises in the context of a “complex and highly technical regulatory program.” Thomas Jefferson, 512 U. S., at 512. After all, judges are most likely to come to divergent conclusions when they are least likely to know what they are doing.

(Is there anything to be said for courts all over the country trying to fgure out what makes for a new active moiety?) But the uniformity justifcation retains some weight even for more accessible rules, because their language too may give rise to more than one eminently reasonable reading. Consider Auer itself. See supra, at 567–568. There, four Circuits held that police captains were “subject to” pay deductions for disci- plinary infractions if a police manual said they were, even if the department had never docked anyone. Two other Cir- cuits held that captains were “subject to” pay deductions only if the department's actual practice made that punishment a re- alistic possibility. See Auer, 519 U. S., at 460. Had the agency issued an interpretation before all those rulings

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(rather than, as actually happened, in a brief in this Court), a deference rule would have averted most of that confict and uncertainty. See Christopher v. SmithKline Beecham Corp., 567 U. S. 142, 158, n. 17 (2012) (noting for this rea- son that Auer deference imparts “predictability to the ad- ministrative process” (internal quotation marks omitted)).

Auer deference thus serves to ensure consistency in federal regulatory law, for everyone who needs to know what it requires.

But all that said, Auer deference is not the answer to every question of interpreting an agency's rules. Far from it. As we explain in this section, the possibility of deference can arise only if a regulation is genuinely ambiguous. And when we use that term, we mean it—genuinely ambiguous, even after a court has resorted to all the standard tools of interpretation. Still more, not all reasonable agency con- structions of those truly ambiguous rules are entitled to def- erence. As just explained, we presume that Congress in- tended for courts to defer to agencies when they interpret their own ambiguous rules. See supra, at 566–573. But when the reasons for that presumption do not apply, or coun- tervailing reasons outweigh them, courts should not give def- erence to an agency's reading, except to the extent it has the “power to persuade.” Christopher, 567 U. S., at 159 (quot- ing Skidmore v. Swift & Co., 323 U. S. 134, 140 (1944)). We have thus cautioned that Auer deference is just a “general rule”; it “does not apply in all cases.” Christopher, 567

U. S., at 155. And although the limits of Auer deference are

not susceptible to any rigid test, we have noted various circumstances in which such deference is “unwarranted.” Ibid. In particular, that will be so when a court concludes that an interpretation does not refect an agency's authori- tative, expertise-based, “fair[, or] considered judgment.” Ibid. (quoting Auer, 519 U. S., at 462); cf. United States v.

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Mead Corp., 533 U. S. 218, 229–231 (2001) (adopting a similar approach to Chevron deference).

We take the opportunity to restate, and somewhat expand on, those principles here to clear up some mixed messages we have sent. At times, this Court has applied Auer defer- ence without signifcant analysis of the underlying regula- tion. See, e. g., United States v. Larionoff, 431 U. S. 864, 872 (1977) (stating that the Court “need not tarry” over the regulation's language given Seminole Rock). At other times, the Court has given Auer deference without careful attention to the nature and context of the interpretation.

See, e. g., Thorpe v. Housing Authority of Durham, 393 U. S.

268, 276, and nn. 22–23 (1969) (deferring to an agency's view as expressed in letters to third parties). And in a vacuum, our most classic formulation of the test—whether an agency's construction is “plainly erroneous or inconsistent with the regulation,” Seminole Rock, 325 U. S., at 414—may suggest a caricature of the doctrine, in which deference is “refexive.” Pereira v. Sessions, 585 U. S. 198, 221 (2018) (Kennedy, J., concurring). So we cannot deny that Kisor has a bit of grist for his claim that Auer “bestows on agencies expansive, unreviewable” authority. Brief for Petitioner 25.

But in fact Auer does no such thing: It gives agencies their due, while also allowing—indeed, obligating—courts to per- form their reviewing and restraining functions. So before we turn to Kisor's specifc grievances, we think it worth rein- forcing some of the limits inherent in the Auer doctrine.4

First and foremost, a court should not afford Auer defer- ence unless the regulation is genuinely ambiguous. See Christensen v. Harris County, 529 U. S. 576, 588 (2000); Sem- inole Rock, 325 U. S., at 414 (deferring only “if the meaning of the words used is in doubt”). If uncertainty does not

4 The proper understanding of the scope and limits of the Auer doctrine is, of course, not set out in any of the opinions that concur only in the judgment.

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exist, there is no plausible reason for deference. The regu- lation then just means what it means—and the court must give it effect, as the court would any law. Otherwise said, the core theory of Auer deference is that sometimes the law runs out, and policy-laden choice is what is left over. See supra, at 570–572. But if the law gives an answer—if there is only one reasonable construction of a regulation—then a court has no business deferring to any other reading, no mat- ter how much the agency insists it would make more sense.

Deference in that circumstance would “permit the agency, under the guise of interpreting a regulation, to create de facto a new regulation.” See Christensen, 529 U. S., at 588.

Auer does not, and indeed could not, go that far.

And before concluding that a rule is genuinely ambiguous, a court must exhaust all the “traditional tools” of construc- tion. Chevron U. S. A. Inc. v. Natural Resources Defense Council, Inc., 467 U. S. 837, 843, n. 9 (1984) (adopting the same approach for ambiguous statutes). For again, only when that legal toolkit is empty and the interpretive ques- tion still has no single right answer can a judge conclude that it is “more [one] of policy than of law.” Pauley, 501 U. S., at

696. That means a court cannot wave the ambiguity fag

just because it found the regulation impenetrable on frst read. Agency regulations can sometimes make the eyes glaze over. But hard interpretive conundrums, even relat- ing to complex rules, can often be solved. See id., at 707 (Scalia, J., dissenting) (A regulation is not ambiguous merely because “discerning the only possible interpretation requires a taxing inquiry”). To make that effort, a court must “care- fully consider[ ]” the text, structure, history, and purpose of a regulation, in all the ways it would if it had no agency to fall back on. Ibid. Doing so will resolve many seeming ambiguities out of the box, without resort to Auer deference.

If genuine ambiguity remains, moreover, the agency's reading must still be “reasonable.” Thomas Jefferson, 512

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U. S., at 515. In other words, it must come within the zone

of ambiguity the court has identifed after employing all its interpretive tools.

(Note that serious application of those tools therefore has use even when a regulation turns out to be truly ambiguous. The text, structure, history, and so forth at least establish the outer bounds of permissible inter- pretation.) Some courts have thought (perhaps because of Seminole Rock's “plainly erroneous” formulation) that at this stage of the analysis, agency constructions of rules re- ceive greater deference than agency constructions of stat- utes. See, e. g., Ohio Dept. of Medicaid v. Price, 864 F. 3d 469, 477 (CA6 2017). But that is not so. Under Auer, as under Chevron, the agency's reading must fall “within the bounds of reasonable interpretation.” Arlington v. FCC, 569 U. S. 290, 296 (2013). And let there be no mistake: That is a requirement an agency can fail.

Still, we are not done—for not every reasonable agency reading of a genuinely ambiguous rule should receive Auer deference. We have recognized in applying Auer that a court must make an independent inquiry into whether the character and context of the agency interpretation entitles it to controlling weight. See Christopher, 567 U. S., at 155; see also Mead, 533 U. S., at 229–231, 236–237 (requiring an analo- gous though not identical inquiry for Chevron deference). As explained above, we give Auer deference because we presume, for a set of reasons relating to the comparative attributes of courts and agencies, that Congress would have wanted us to.

See supra, at 569–573. But the administrative realm is vast and varied, and we have understood that such a presumption cannot always hold. Cf. Mead, 533 U. S., at 236 (“tailor[ing] deference to [the] variety” of administrative action); Arling- ton, 569 U. S., at 309– 310 (Breyer, J., concurring in part and concurring in judgment) (noting that “context- specifc[ ] factors” may show that “Congress would [not] have intended the agency to resolve [some] ambiguity”). The in- quiry on this dimension does not reduce to any exhaustive test. But we have laid out some especially important mark-

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Opinion of the Court ers for identifying when Auer deference is and is not appropriate.

To begin with, the regulatory interpretation must be one actually made by the agency. In other words, it must be the agency's “authoritative” or “offcial position,” rather than any more ad hoc statement not refecting the agency's views.

Mead, 533 U. S., at 257–259, and n. 6 (Scalia, J., dissenting).

That constraint follows from the logic of Auer deference— because Congress has delegated rulemaking power, and all that typically goes with it, to the agency alone. Of course, the requirement of “authoritative” action must recognize a reality of bureaucratic life: Not everything the agency does comes from, or is even in the name of, the Secretary or his chief advisers. So, for example, we have deferred to “offcial staff memoranda” that were “published in the Federal Regis- ter,” even though never approved by the agency head. Ford Motor Credit, 444 U. S., at 566, n. 9, 567, n. 10 (declining to “draw a radical distinction between” agency heads and staff for Auer deference). But there are limits. The interpreta- tion must at the least emanate from those actors, using those vehicles, understood to make authoritative policy in the rele- vant context. See, e. g., Paralyzed Veterans, 117 F. 3d, at 587 (refusing to consider a “speech of a mid-level offcial” as an “authoritative departmental position”); N. Y. State Dept.

of Social Servs. v. Bowen, 835 F. 2d 360, 365–366 (CADC 1987) (rejecting the idea that an “informal memorandum” re- counting a telephone conversation between employees could count as an “authoritative pronouncement”); Exelon Genera- tion Co. v. Local 15, Int'l Brotherhood of Elec. Workers, AFL–CIO, 676 F. 3d 566, 576–578 (CA7 2012) (declining def- erence when the agency had itself “disclaimed the use of reg- ulatory guides as authoritative”). If the interpretation does not do so, a court may not defer.

Next, the agency's interpretation must in some way impli- cate its substantive expertise. Administrative knowledge and experience largely “account [for] the presumption that Congress delegates interpretive lawmaking power to the

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agency.” Martin, 499 U. S., at 153. So the basis for defer- ence ebbs when “[t]he subject matter of the [dispute is] dis- tan[t] from the agency's ordinary” duties or “fall[s] within the scope of another agency's authority.” Arlington, 569 U. S., at 309 (opinion of Breyer, J.). This Court indicated as much when it analyzed a “split enforcement” scheme, in which Congress divided regulatory power between two enti- ties. Martin, 499 U. S., at 151. To decide “whose reason- able interpretation” of a rule controlled, we “presum[ed] Congress intended to invest interpretive power” in which- ever actor was “best position[ed] to develop” expertise about the given problem. Id., at 149, 153. The same idea holds good as between agencies and courts. “Generally, agencies have a nuanced understanding of the regulations they admin- ister.” Brief for Respondent 33. That point is most obvious when a rule is technical; think back to our “moiety” or “diag- nosis” examples. See supra, at 567. But more prosaic- seeming questions also commonly implicate policy expertise; consider the TSA assessing the security risks of pâté or a disa- bilities offce weighing the costs and benefts of an accommoda- tion. See supra, at 566–567. Once again, though, there are limits. Some interpretive issues may fall more naturally into a judge's bailiwick. Take one requiring the elucidation of a simple common-law property term, see Jicarilla Apache Tribe v. FERC, 578 F. 2d 289, 292–293 (CA10 1978), or one con- cerning the award of an attorney's fee, see West Va. High- lands Conservancy, Inc. v. Norton, 343 F. 3d 239 (CA4 2003).

Cf. Adams Fruit Co. v. Barrett, 494 U. S. 638, 649–650 (1990) (declining to award Chevron deference when an agency inter- prets a judicial-review provision). When the agency has no comparative expertise in resolving a regulatory ambiguity, Congress presumably would not grant it that authority.5

5 For a similar reason, this Court has denied Auer deference when an agency interprets a rule that parrots the statutory text. See Gonzales v.

Oregon, 546 U. S. 243, 257 (2006). An agency, we explained, gets no “spe-

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Finally, an agency's reading of a rule must refect “fair and considered judgment” to receive Auer deference.

Christopher, 567 U. S., at 155 (quoting Auer, 519 U. S., at 462). That means, we have stated, that a court should de- cline to defer to a merely “convenient litigating position” or “post hoc rationalizatio[n] advanced” to “defend past agency action against attack.” Christopher, 567 U. S., at 155 (quot- ing Bowen v. Georgetown Univ. Hospital, 488 U. S. 204, 213 (1988), and Auer, 519 U. S., at 462).6 And a court may not defer to a new interpretation, whether or not introduced in litigation, that creates “unfair surprise” to regulated parties.

Long Island Care, 551 U. S., at 170. That disruption of ex- pectations may occur when an agency substitutes one view of a rule for another. We have therefore only rarely given Auer deference to an agency construction “confict[ing] with a prior” one. Thomas Jefferson, 512 U. S., at 515. Or the upending of reliance may happen without such an explicit interpretive change. This Court, for example, recently re- fused to defer to an interpretation that would have imposed retroactive liability on parties for longstanding conduct that the agency had never before addressed. See Christopher, 567 U. S., at 155–156. Here too the lack of “fair warning” outweighed the reasons to apply Auer. Id., at 156 (internal quotation marks omitted).

cial authority to interpret its own words when, instead of using its exper- tise and experience to formulate a regulation, it has elected merely to paraphrase the statutory language.” Ibid.

6 The general rule, then, is not to give deference to agency interpreta- tions advanced for the frst time in legal briefs. See Bowen, 488 U. S., at 212–213. But we have not entirely foreclosed that practice. Auer itself deferred to a new regulatory interpretation presented in an amicus cu- riae brief in this Court. There, the agency was not a party to the litiga- tion, and had expressed its views only in response to the Court's request. “[I]n the circumstances,” the Court explained, “[t]here [was] simply no reason to suspect that the interpretation [did] not refect the agency's fair and considered judgment on the matter in question.” Auer, 519 U. S., at 462.

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* * *

The upshot of all this goes something as follows. When it applies, Auer deference gives an agency signifcant leeway to say what its own rules mean. In so doing, the doctrine enables the agency to fll out the regulatory scheme Con- gress has placed under its supervision. But that phrase “when it applies” is important—because it often doesn't. As described above, this Court has cabined Auer's scope in var- ied and critical ways—and in exactly that measure, has main- tained a strong judicial role in interpreting rules. What emerges is a deference doctrine not quite so tame as some might hope, but not nearly so menacing as they might fear.

That brings us to the lone question presented here— whether we should abandon the longstanding doctrine just described. In contending that we should, Kisor raises statu- tory, policy, and constitutional claims (in that order). But he faces an uphill climb. He must frst convince us that Auer deference is wrong. And even then, he must overcome stare decisis—the special care we take to preserve our precedents.

In the event, Kisor fails at the frst step: None of his argu- ments provide good reason to doubt Auer deference. And even if that were not so, Kisor does not offer the kind of special justifcation needed to overrule Auer, and Seminole Rock, and all our many other decisions deferring to reason- able agency constructions of ambiguous rules.

Kisor frst attacks Auer as inconsistent with the judicial review provision of the Administrative Procedure Act (APA).

See 5 U. S. C. § 706. As Kisor notes, Congress enacted the APA in 1946—the year after Seminole Rock—to serve as “ the fundamental charter of the administrative state. ” Brief for Petitioner 26 (internal quotation marks omitted).

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action, states (among other things) that reviewing courts shall “determine the meaning or applicability of the terms of an agency action” (including a regulation). According to Kisor, Auer violates that edict by thwarting “meaningful judicial review” of agency rules. Brief for Petitioner 29.

Courts under Auer, he asserts (now in the language of Sec- tion 706), “abdicate their offce of determining the meaning” of a regulation. Id., at 27 (internal quotation marks omitted).

To begin with, that argument ignores the many ways, dis- cussed above, that courts exercise independent review over the meaning of agency rules. See supra, at 574–579. As we have explained, a court must apply all traditional meth- ods of interpretation to any rule, and must enforce the plain meaning those methods uncover. There can be no thought of deference unless, after performing that thoroughgoing re- view, the regulation remains genuinely susceptible to multi- ple reasonable meanings and the agency's interpretation lines up with one of them. And even if that is the case, courts must on their own determine whether the nature or context of the agency's construction reverses the usual pre- sumption of deference. Most notably, a court must consider whether the interpretation is authoritative, expertise-based, considered, and fair to regulated parties. All of that fgures as “meaningful judicial review.” Brief for Petitioner 29.

And even when a court defers to a regulatory reading, it acts consistently with Section 706. That provision does not specify the standard of review a court should use in “de- termin[ing] the meaning” of an ambiguous rule. 5 U. S. C. § 706. One possibility, as Kisor says, is to review the issue de novo. But another is to review the agency's reading for reasonableness. To see the point, assume that a regulatory (say, an employment) statute expressly instructed courts to apply Auer deference when reviewing an agency's interpretations of its ambiguous rules. Nothing in that statute would confict with Section 706. Instead, the em-

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ployment law would simply make clear how a court is to “determine the meaning” of such a rule—by deferring to an agency's reasonable reading. Ibid. Of course, that is not the world we know: Most substantive statutes do not say anything about Auer deference, one way or the other. But for all the reasons spelled out above, we have long presumed (subject always to rebuttal) that the Congress delegating regulatory authority to an agency intends as well to give that agency considerable latitude to construe its ambiguous rules. See supra, at 569–573. And that presumption oper- ates just like the hypothesized statute above. Because of it, once again, courts do not violate Section 706 by applying Auer. To the contrary, they fulfll their duty to “determine the meaning” of a rule precisely by deferring to the agency's reasonable reading. See Sunstein & Vermeule, The Unbear- able Rightness of Auer, 84 U. Chi. L. Rev. 297, 306 (2017) (If Congress intends “that the meaning of a regulation turns on the agency's interpretation of its meaning,” then courts com- ply with Section 706's command to “ `determine the meaning' [of the regulation] by deferring to that view”); cf. Arlington, 569 U. S., at 317 (Roberts, C. J., dissenting) (similarly ad- dressing why Chevron deference comports with Section 706).

Section 706 and Auer thus go hand in hand.

That is especially so given the practice of judicial review at the time of the APA's enactment. Section 706 was under- stood when enacted to “restate[ ] the present law as to the scope of judicial review.” See Dept. of Justice, Attorney General's Manual on the Administrative Procedure Act 108 (1947); see also Vermont Yankee Nuclear Power Corp. v.

Natural Resources Defense Council, Inc., 435 U. S. 519, 546 (1978) (noting that this Court gives some deference to the Manual “because of the role played by the Department of Justice in drafting the legislation”). We have thus inter- preted the APA not to “signifcantly alter the common law of judicial review of agency action.” Heckler v. Chaney, 470

U. S. 821, 832 (1985) (internal quotation marks omitted).

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That pre-APA common law included Seminole Rock itself (decided the year before) along with prior decisions foretell- ing that ruling. See supra, at 568–569. Even assume that the deference regime laid out in those cases had not yet fully taken hold. At a minimum, nothing in the law of that era required all judicial review of agency interpretations to be de novo. Cf. Manning, Constitutional Structure and Judicial Deference to Agency Interpretations of Agency Rules, 96 Colum. L. Rev. 612, 635–636 (1996) (arguing that courts be- fore the APA used “fexible, common law methods to review administrative action”). And so nothing suggests that Sec- tion 706 imposes that requirement. Or otherwise said: If Section 706 did not change the law of judicial review (as we have long recognized), then it did not proscribe a deferential standard then known and in use.

Kisor next claims that Auer circumvents the APA's rule- making requirements. Section 553, as Kisor notes, man- dates that an agency use notice-and-comment procedures be- fore issuing legislative rules. See 5 U. S. C. §§ 553(b), (c).

But the section allows agencies to issue “interpret[ive]” rules without notice and comment. See § 553(b)(A). A key feature of those rules is that (unlike legislative rules) they are not supposed to “have the force and effect of law”—or, otherwise said, to bind private parties. Perez v. Mortgage Bankers Assn., 575 U. S. 92, 97 (2015) (internal quotation marks omitted). Instead, interpretive rules are meant only to “advise the public” of how the agency understands, and is likely to apply, its binding statutes and legislative rules.

Ibid. But consider, Kisor argues, what happens when a court gives Auer deference to an interpretive rule. The re- sult, he asserts, is to make a rule that has never gone through notice and comment binding on the public. See Brief for Petitioner 21, 29. Or put another way, the inter- pretive rule ends up having the “force and effect of law” without ever paying the procedural cost. Mortgage Bank- ers, 575 U. S., at 97.

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But this Court rejected the identical argument just a few years ago, and for good reason. In Mortgage Bankers, we held that interpretive rules, even when given Auer defer- ence, do not have the force of law. See 575 U. S., at 104, and

n. 4. An interpretive rule itself never forms “the basis for

an enforcement action”—because, as just noted, such a rule does not impose any “legally binding requirements” on pri- vate parties. National Min. Assn. v. McCarthy, 758 F. 3d 243, 251 (CADC 2014). An enforcement action must instead rely on a legislative rule, which (to be valid) must go through notice and comment. And in all the ways discussed above, the meaning of a legislative rule remains in the hands of courts, even if they sometimes divine that meaning by look- ing to the agency's interpretation. See supra, at 574–579.

Courts frst decide whether the rule is clear; if it is not, whether the agency's reading falls within its zone of ambigu- ity; and even if the reading does so, whether it should re- ceive deference. In short, courts retain the fnal authority to approve—or not—the agency's reading of a notice-and- comment rule. See Mortgage Bankers, 575 U. S., at 104, n. 4 (“[I]t is the court that ultimately decides whether a given regulation means what the agency says”). No binding of anyone occurs merely by the agency's say-so.

And indeed, a court deciding whether to give Auer defer- ence must heed the same procedural values as Section 553 refects. Remember that a court may defer to only an agency's authoritative and considered judgments. See supra, at 576–579. No ad hoc statements or post hoc rationalizations need apply. And recall too that deference turns on whether an agency's interpretation creates unfair surprise or upsets reliance interests. See supra, at 579.

So an agency has a strong incentive to circulate its inter- pretations early and widely. In such ways, the doctrine of Auer deference reinforces, rather than undermines, the ideas of fairness and informed decisionmaking at the core of the APA.

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To supplement his two APA arguments, Kisor turns to pol- icy, leaning on a familiar claim about the incentives Auer creates. According to Kisor, Auer encourages agencies to issue vague and open-ended regulations, confdent that they can later impose whatever interpretation of those rules they prefer. See Brief for Petitioner 37–41. That argument re- ceived its fullest elaboration in a widely respected law re- view article pre-dating Auer. See Manning, 96 Colum.

self-delegation has appeared in opinions from this Court, starting with several from Justice Scalia calling for Auer's reconsideration. See, e. g., Christopher, 567 U. S., at 158 (citing Manning, supra, at 655–668); Decker v. Northwest Environmental Defense Center, 568 U. S. 597, 620–621 (2013) (Scalia, J., concurring in part and dissenting in part) (citing Manning, supra); Talk America, Inc. v. Michigan Bell Tele- phone Co., 564 U. S. 50, 69 (2011) (Scalia, J., concurring) (prin- cipally relying on Manning, supra).

But the claim has notable weaknesses, empirical and theo- retical alike. First, it does not survive an encounter with experience. No real evidence—indeed, scarcely an anecdote—backs up the assertion. As two noted scholars (one of whom reviewed thousands of rules during four years of government service) have written: “[W]e are unaware of, and no one has pointed to, any regulation in American history that, because of Auer, was designed vaguely. ” Sunstein & Vermeule, 84 U. Chi. L. Rev., at 308. And even the argument's theoretical allure dissipates upon refection.

For strong (almost surely stronger) incentives and pressures cut in the opposite direction. “[R]egulators want their reg- ulations to be effective, and clarity promotes compliance.” Brief for Administrative Law Scholars as Amici Curiae 18–

19. Too, regulated parties often push for precision from an

agency, so that they know what they can and cannot do.

And ambiguities in rules pose risks to the long-run survival of agency policy. Vagueness increases the chance of adverse

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judicial rulings. And it enables future administrations, with different views, to reinterpret the rules to their own liking.

Add all of that up and Kisor's ungrounded theory of incen- tives contributes nothing to the case against Auer.

Finally, Kisor goes big, asserting (though feetingly) that Auer deference violates “separation-of-powers principles.” See Brief for Petitioner 43. In his view, those principles prohibit “vest[ing] in a single branch the law-making and law-interpreting functions.” Id., at 45. If that objection is to agencies' usurping the interpretive role of courts, this opinion has already met it head-on. Properly understood and applied, Auer does no such thing. In all the ways we have described, courts retain a frm grip on the interpretive function. See supra, at 574–579; Mortgage Bankers, 575

U. S., at 104, n. 4. If Kisor's objection is instead to the sup-

posed commingling of functions (that is, the legislative and judicial) within an agency, this Court has answered it often before. See, e. g., Withrow v. Larkin, 421 U. S. 35, 54 (1975) (permitting such a combination of functions); FTC v. Cement Institute, 333 U. S. 683, 702 (1948) (same). That sort of mix- ing is endemic in agencies, and has been “since the beginning of the Republic.” Arlington, 569 U. S., at 304–305, n. 4. It does not violate the separation of powers, we have explained, because even when agency “activities take `legislative' and `judicial' forms,” they continue to be “exercises of[ ] the `ex- ecutive Power' ”—or otherwise said, ways of executing a statutory plan. Ibid. (quoting U. S. Const., Art. II, § 1, cl. 1).

So Kisor's last argument to dispatch Auer deference fails as roundly as the rest.

If all that were not enough, stare decisis cuts strongly against Kisor's position. “Overruling precedent is never a small matter.” Kimble v. Marvel Entertainment, LLC, 576

U. S. 446, 455 (2015). Adherence to precedent is “a founda-

tion stone of the rule of law.” Michigan v. Bay Mills In- dian Community, 572 U. S. 782, 798 (2014). “[I]t promotes

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the evenhanded, predictable, and consistent development of legal principles, fosters reliance on judicial decisions, and contributes to the actual and perceived integrity of the judi- cial process.” Payne v. Tennessee, 501 U. S. 808, 827 (1991).

To be sure, stare decisis is “not an inexorable command.” Id., at 828. But any departure from the doctrine demands “special justifcation”—something more than “an argument that the precedent was wrongly decided.” Halliburton Co.

v. Erica P. John Fund, Inc., 573 U. S. 258, 266 (2014).

And that is even more than usually so in the circumstances here. First, Kisor asks us to overrule not a single case, but a “long line of precedents”—each one reaffrming the rest and going back 75 years or more. Bay Mills, 572 U. S., at 798; see nn. 2, 3, supra. This Court alone has applied Auer or Seminole Rock in dozens of cases, and lower courts have done so thousands of times. Deference to reasonable agency interpretations of ambiguous rules pervades the whole cor- pus of administrative law. Second, because that is so, aban- doning Auer deference would cast doubt on many settled constructions of rules. As Kisor acknowledged at oral argu- ment, a decision in his favor would allow relitigation of any decision based on Auer, forcing courts to “wrestle [with] whether or not Auer” had actually made a difference. Tr. of Oral Arg. 30; see id., at 47 (Solicitor General agreeing that “every single regulation that's currently on the books whose interpretation has been established under Seminole Rock now [would have] to be relitigated anew”). It is the rare overruling that introduces so much instability into so many areas of law, all in one blow.

And third, even if we are wrong about Auer, “Congress remains free to alter what we have done.” Patterson v.

McLean Credit Union, 491 U. S. 164, 172–173 (1989) (stating that when that is so, “[c]onsiderations of stare decisis have special force”). In a constitutional case, only we can correct our error. But that is not so here. Our deference decisions are “balls tossed into Congress's court, for acceptance or not

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as that branch elects.” Kimble, 576 U. S., at 456. And so far, at least, Congress has chosen acceptance. It could amend the APA or any specifc statute to require the sort of de novo review of regulatory interpretations that Kisor fa- vors. Instead, for approaching a century, it has let our def- erence regime work side-by-side with both the APA and the many statutes delegating rulemaking power to agencies. It has done so even after we made clear that our deference decisions refect a presumption about congressional intent.

See Martin, 499 U. S., at 151; supra, at 569–570. And it has done so even after Members of this Court began to raise questions about the doctrine. See, e. g., Talk America, 564

U. S., at 67–69 (Scalia, J., concurring). Given that history—

and Congress's continuing ability to take up Kisor's argu- ments—we would need a particularly “special justifcation” to now reverse Auer.

Kisor offers nothing of that ilk. Nearly all his arguments about abandoning precedent are variants of his merits claims. We hear again, if in different parts of his briefs, that Auer deference frustrates “the policies embodied in the APA” and violates the separation of powers. Reply Brief 13, and n. 5; Brief for Petitioner 47–48. More generally, we learn that Seminole Rock was “wrong on its own terms” and “badly reasoned.” Id., at 47 (internal quotation marks omit- ted). Of course, it is good—and important—for our opinions to be right and well-reasoned. But that is not the test for overturning precedent. Kisor does not claim that Auer def- erence is “unworkable,” a traditional basis for overruling a case. Patterson, 491 U. S., at 173. Nor does he point to changes in legal rules that make Auer a “doctrinal dinosaur.” Kimble, 576 U. S., at 458. All he can muster is that “[t]he administrative state has evolved substantially since 1945.” Brief for Petitioner 53. We do not doubt the point (although we note that Auer and other key deference decisions came along after most of that evolution took place). Still more,

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we agree with Kisor that administrative law doctrines must take account of the far-reaching infuence of agencies and the opportunities such power carries for abuse. That is one reason we have taken care today to reinforce the limits of Auer deference, and to emphasize the critical role courts re- tain in interpreting rules. But it is no answer to the growth of agencies for courts to take over their expertise-based, policymaking functions. Who knows? Maybe in 1945, the FDA was not thinking about “active moieties.” See supra, at 567. But still, today—just as Seminole Rock and Auer held—it should have leeway to say what that term means.

With that, we can fnally return to Kisor's own case. You may remember that his retroactive benefts depend on the meaning of the term “relevant” records in a VA regulation.

See supra, at 564–565. The Board of Veterans' Appeals, through a single judge's opinion, understood records to be relevant only if they relate to the basis of the VA's initial denial of benefts. By contrast, Kisor argued that records are relevant if they go to any benefts criterion, even one that was uncontested. The Federal Circuit upheld the Board's interpretation based on Auer deference.

Applying the principles outlined in this opinion, we hold that a redo is necessary for two reasons. First, the Federal Circuit jumped the gun in declaring the regulation ambigu- ous. We have insisted that a court bring all its interpretive tools to bear before fnding that to be so. See supra, at 574–

575. It is not enough to casually remark, as the court did

here, that “[b]oth parties insist that the plain regulatory lan- guage supports their case, and neither party's position strikes us as unreasonable.” 869 F. 3d, at 1368; see supra, at 574–575. Rather, the court must make a conscientious effort to determine, based on indicia like text, structure, his- tory, and purpose, whether the regulation really has more

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than one reasonable meaning. The Solicitor General argued in this Court that the Board's reading is the only reason- able one. See Brief for Respondent 49–50. Perhaps Kisor will make the converse claim below. Before even consider- ing deference, the court must seriously think through those positions.

And second, the Federal Circuit assumed too fast that Auer deference should apply in the event of genuine ambigu- ity. As we have explained, that is not always true. A court must assess whether the interpretation is of the sort that Congress would want to receive deference. See supra, at 576–579. The Solicitor General suggested at oral argument that the answer in this case might be no. He explained that all 100 or so members of the VA Board act individually (rather than in panels) and that their roughly 80,000 annual decisions have no “precedential value.” Tr. of Oral Arg. 64.

He thus questioned whether a Board member's ruling “re- fects the considered judgment of the agency as a whole.” Ibid.; cf. Mead, 533 U. S., at 233 (declining to give Chevron deference to rulings “being churned out at a rate of 10,000 a year at an agency's 46 scattered offces”). We do not know what position the Government will take on that issue below.

But the questions the Solicitor General raised are exactly the kind the court must consider in deciding whether to award Auer deference to the Board's interpretation.

We accordingly vacate the judgment below and remand the case for further proceedings.

It is so ordered.

Chief Justice Roberts, concurring in part. I join Parts I, II–B, III–B, and IV of the Court's opinion.

We took this case to consider whether to overrule Auer

v. Robbins, 519 U. S. 452 (1997), and Bowles v. Seminole

Rock & Sand Co., 325 U. S. 410 (1945). For the reasons the Court discusses in Part III–B, I agree that overruling those

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precedents is not warranted. I also agree with the Court's treatment in Part II–B of the bounds of Auer deference.

I write separately to suggest that the distance between the majority and Justice Gorsuch is not as great as it may initially appear. The majority catalogs the prerequisites for, and limitations on, Auer deference: The underlying regu- lation must be genuinely ambiguous; the agency's interpreta- tion must be reasonable and must refect its authoritative, expertise-based, and fair and considered judgment; and the agency must take account of reliance interests and avoid un- fair surprise. Justice Gorsuch, meanwhile, lists the rea- sons that a court might be persuaded to adopt an agency's interpretation of its own regulation: The agency thoroughly considered the problem, offered a valid rationale, brought its expertise to bear, and interpreted the regulation in a manner consistent with earlier and later pronouncements. Account- ing for variations in verbal formulation, those lists have much in common.

That is not to say that Auer deference is just the same as the power of persuasion discussed in Skidmore v. Swift & Co., 323 U. S. 134 (1944); there is a difference between hold- ing that a court ought to be persuaded by an agency's inter- pretation and holding that it should defer to that interpreta- tion under certain conditions. But it is to say that the cases in which Auer deference is warranted largely overlap with the cases in which it would be unreasonable for a court not to be persuaded by an agency's interpretation of its own regulation.

One further point: Issues surrounding judicial deference to agency interpretations of their own regulations are distinct from those raised in connection with judicial deference to agency interpretations of statutes enacted by Congress.

See Chevron U. S. A. Inc. v. Natural Resources Defense Council, Inc., 467 U. S. 837 (1984). I do not regard the Court's decision today to touch upon the latter question.

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Justice Gorsuch, with whom Justice Thomas joins, with whom Justice Kavanaugh joins as to Parts I, II, III, IV, and V, and with whom Justice Alito joins as to Parts I, II, and III, concurring in the judgment.

It should have been easy for the Court to say goodbye to Auer v. Robbins.1 In disputes involving the relationship between the government and the people, Auer requires judges to accept an executive agency's interpretation of its own regulations even when that interpretation doesn't rep- resent the best and fairest reading. This rule creates a “systematic judicial bias in favor of the federal government, the most powerful of parties, and against everyone else.” 2 Nor is Auer's biased rule the product of some congressional mandate we are powerless to correct: This Court invented it, almost by accident and without any meaningful effort to reconcile it with the Administrative Procedure Act or the Constitution. A legion of academics, lower court judges, and Members of this Court—even Auer's author—has called on us to abandon Auer. Yet today a bare majority finches, and Auer lives on.

Still, today's decision is more a stay of execution than a pardon. The Court cannot muster even fve votes to say that Auer is lawful or wise. Instead, a majority retains Auer only because of stare decisis. And yet, far from stand- ing by that precedent, the majority proceeds to impose so many new and nebulous qualifcations and limitations on Auer that The Chief Justice claims to see little practical difference between keeping it on life support in this way and overruling it entirely. So the doctrine emerges maimed and enfeebled—in truth, zombifed.

Respectfully, we owe our colleagues on the lower courts more candid and useful guidance than this. And judges owe the people who come before them nothing less than a fair

2 Larkin & Slattery, The World After Seminole Rock and Auer, 42 Harv.

J. L. & Pub. Pol'y 625, 641 (2019) (internal quotation marks omitted).

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contest, where every party has an equal chance to persuade the court of its interpretation of the law's demands. One can hope that The Chief Justice is right, and that whether we formally overrule Auer or merely neuter it, the results in most cases will prove the same. But means, not just ends, matter, and retaining even this debilitated version of Auer threatens to force litigants and lower courts to jump through needless and perplexing new hoops and in the proc- ess deny the people the independent judicial decisions they deserve. All to what end? So that we may pretend to abide stare decisis?

Consider this case. Mr. Kisor is a Marine who lost out on benefts for post-traumatic stress disorder when the court of appeals deferred to a regulatory interpretation advanced by the Department of Veterans Affairs. The court of appeals was guilty of nothing more than faithfully following Auer.

But the majority today invokes stare decisis, of all things, to vacate that judgment and tell the court of appeals to try again using its newly retooled, multi-factored, and far less determinate version of Auer. Respectfully, I would stop this business of making up excuses for judges to abdicate their job of interpreting the law, and simply allow the court of appeals to afford Mr. Kisor its best independent judgment of the law's meaning.

The Court's failure to be done with Auer, and its decision to adorn Auer with so many new and ambiguous limitations, all but guarantees we will have to pass this way again.

When that day comes, I hope this Court will fnd the nerve it lacks today and inter Auer at last. Until then, I hope that our judicial colleagues on other courts will take courage from today's ruling and realize that it has transformed Auer into a paper tiger.

Where did Auer come from? Not from the Constitution, some ancient common law tradition, or even a modern stat- ute. Instead, it began as an unexplained aside in a decision

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about emergency price controls at the height of the Second World War. Even then, the dictum sat on the shelf, little noticed, for years. Only in the last few decades of the 20th century did lawyers and courts really begin to dust it off and shape it into the refexive rule of deference to regulatory agencies we know today. And they did so without ever pausing to consider whether a rule like that could be legally justifed or even made sense. Auer is really little more than an accident.

Before the mid-20th century, few federal agencies engaged in extensive rulemaking, and those that did rarely sought deference for their regulatory interpretations.3 But when the question arose, this Court did not hesitate to say that judges reviewing administrative action should decide all questions of law, including questions concerning the meaning of regulations. As Justice Brandeis put it, “[t]he inexorable safeguard which the due process clause assures is . . . that there will be opportunity for a court to determine whether the applicable rules of law . . . were observed.” 4 Unsurpris- ingly, the government's early, longstanding, and consistent interpretation of a statute, regulation, or other legal instru- ment could count as powerful evidence of its original public meaning.5 But courts respected executive interpretations only because and to the extent “they embodied understand- ings made roughly contemporaneously with . . . enactment

3 See Knudsen & Wildermuth, Unearthing the Lost History of Seminole Rock, 65 Emory L. J. 47, 55, 65, 68 (2015) (Lost History).

4 St. Joseph Stock Yards Co. v. United States, 298 U. S. 38, 73 (1936) (concurring opinion). See also FTC v. Gratz, 253 U. S. 421, 427 (1920); ICC v. Union Pacifc R. Co., 222 U. S. 541, 547 (1912); Belden v. Chase, 150 U. S. 674, 698 (1893); Decatur v. Paulding, 14 Pet. 497, 515 (1840); accord, Woolhandler, Judicial Deference to Administrative Action—A Re- visionist History, 43 Admin. L. Rev. 197, 206–207 (1991).

5 Bamzai, The Origins of Judicial Deference to Executive Interpretation,

126 Yale L. J. 908, 930–947 (2017) (Origins).

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and stably maintained and practiced since that time,” not “because they were executive as such.” 6

Writing for four Members of the Court, Justice Kagan suggests that Auer's very different approach to the interpre- tation of agency regulations was foreshadowed as early as this Court's 1898 decision in United States v. Eaton.7 Ante, at 569. But this is mistaken. The question in that case was whether Mr. Eaton's appointment as temporary vice-consul to Siam was consistent with State Department regulations.

After several pages of careful and independent legal analy- sis, the Court held that the regulations did authorize the appointment. That conclusion, the Court explained, was “rendered necessary by a consideration of the text.” 8 Only after reaching this conclusion did the Court observe that the State Department had previously adopted the same con- struction, noting along the way that the Department's views were “entitled to the greatest weight” and that the Court saw “no reason in this case to doubt [their] correctness.” 9 Eaton thus simply followed the well-worn path of acknowl- edging that an agency's interpretation of a regulation can supply evidence of its meaning.10 Nowhere did the Court even hint that it would have deferred to the State Depart-

6 Id., at 943, 962; cf. NLRB v. Noel Canning, 573 U. S. 513, 572–573 (2014) (Scalia, J., concurring in judgment) (an “open, widespread, and unchal- lenged” governmental practice can “guide [courts'] interpretation” of an ambiguous text, but it cannot “alter” the meaning of that text); Edwards' Lessee v. Darby, 12 Wheat. 206, 210 (1827) (“In the construction of a doubt- ful and ambiguous law, the cotemporaneous construction of those who were called upon to act under the law, and were appointed to carry its provisions into effect, is entitled to very great respect”).

8 Id., at 342.

9 Id., at 342–343.

10 Cf. Newman, How Courts Interpret Regulations, 35 Cal. L. Rev. 509, 521, and n. 78 (1947) (noting that Eaton suggested administrative interpre- tations could be “ `persuasive' but not binding”).

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ment's views about the meaning of the law if its own inde- pendent textual analysis had not led it to the same conclusion.

All this is borne out by the Court's later teachings in Skidmore v. Swift & Co. in 1944.11 The question there was whether the time overnight employees spent waiting to re- spond to fre alarms could amount to compensable overtime under the Fair Labor Standards Act. The lower courts had held as a matter of law that it could not. In an opinion by Justice Jackson, this Court reversed. The Court frst held, based on its own independent analysis, that “no principle of law found either in the statute or in Court decisions pre- cludes waiting time from also being working time.” 12 Only then did the Court consider “what, if any, deference courts should pay” to the views of the Administrator of the Labor Department's Wage and Hour Division.13 And on that ques- tion the Court reaffirmed the traditional rule that an agency's interpretation of the law is “not controlling upon the courts” and is entitled only to a weight proportional to “the thoroughness evident in its consideration, the validity of its reasoning, its consistency with earlier and later pro- nouncements, and all those factors which give it power to persuade.” 14 At the time, the infuential administrative law scholar Kenneth Culp Davis considered this “[a]n entirely re- liable statement” of the law.15

12 Id., at 136–137. Much of the legal analysis supporting this conclusion was contained in the companion case, Armour & Co. v. Wantock, 323 U. S. 126 (1944), which made no mention of any administrative interpretations.

Id., at 129–134; see Skidmore, 323 U. S., at 136 (citing the “reasons set forth in the Armour case decided herewith”).

13 Id., at 139.

14 Id., at 140; see also id., at 139 (the agency's views “are not, of course, conclusive, even in the cases with which they directly deal” and do not “bin[d] a district court's processes, as an authoritative pronouncement of a higher court might do”).

15 Davis, Administrative Rules—Interpretative, Legislative, and Retro- active, 57 Yale L. J. 919, 936–939, and n. 86 (1948); see also K. Davis, Administrative Law § 249, p. 901 (1951) (“[S]ubstitution of judicial judg-

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In truth, the seeds of the Auer doctrine were frst planted only in 1945, in Bowles v. Seminole Rock & Sand Co.16 That case involved regulations issued by the Offce of Price Ad- ministration (OPA), which Congress had tasked with stabiliz- ing the national economy during the Second World War through the use of emergency price controls. It was in that context that the Court declared—for the frst time and with- out citing any authority—that “if the meaning of [the regula- tion were] in doubt,” the agency's interpretation would merit “controlling weight unless it is plainly erroneous or inconsist- ent with the regulation.” 17

Yet even then it was far from clear how much weight the Court really placed on the agency's interpretation. As it had in Eaton, the Court in Seminole Rock began with an extended discussion of “the plain words of the regulation,” which led it to conclude that the text “clearly” supported the government's position.18 Only after reaching that conclu- sion based on its own independent analysis did the Court proceed to add that “[a]ny doubts . . . are removed by refer- ence to the administrative construction.” 19

So confused was all this that readers at the time didn't perceive Seminole Rock's dictum as changing anything.

Professor Davis observed that the Court's discussion about giving “controlling weight” to the agency's interpretation was an unexplained aside that made no difference to the case's outcome.20 The dictum, too, was readily explained as refecting the unusual factual context in which the case

ment on the content of interpretative rules is always permissible, even though the reviewing court may give `weight' or `great weight' to the rule.

The best guide may be the Court's formula in Skidmore . . . ”).

17 Id., at 414.

18 Id., at 414–417.

19 Id., at 417.

20 See Davis, Scope of Review of Federal Administrative Action, 50 Colum. L. Rev. 559, 597 (1950).

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arose, involving an emergency government program created to deal with “unique circumstances of war and economic de- pression.” 21 And the Court decided Seminole Rock the same Term it issued Skidmore, where it reaffrmed the tradi- tional rule that an agency's views about the law may per- suade a court but can never control its judgment. In fact, the Court in Seminole Rock was careful to note that the OPA interpretation before it bore many of the characteristics Skidmore would have recognized as increasing its persuasive force: It had been announced concurrently with the regula- tion, disseminated widely to the regulated community, and adhered to consistently by the agency.22

No wonder, then, that for many years after the decision, courts “connected Seminole Rock more closely with the def- erence framework . . . under Skidmore” and generally en- gaged in a Skidmore-type analysis, accepting the agency's interpretation “only after independently examining the reg- ulation and concluding that the agency interpretation was sound.” 23 If Seminole Rock's “controlling weight” dictum was afforded any force, it was usually only in the price con- trol context; even then it was ordinarily extended only to “offcial” agency interpretations that were published contem- poraneously with the regulation and widely distributed.24 The Fourth Circuit exemplifed the early understanding of Seminole Rock when it observed—citing both Seminole Rock and Skidmore—that “under settled principles” an offcial agency interpretation in an opinion letter was entitled only to “respectful consideration.” 25 The letter, the court stressed,

Sometimes They Just Don't Get It, 10 Admin. L. J. Am. U. 1, 12 (1996).

22 325 U. S., at 417–418; see Pojanowski, Revisiting Seminole Rock, 16 Geo. J. L. & Pub. Pol'y 87, 88 (2018) (“A closer look at Seminole Rock suggests an unremarkable application of the less-deferential standard of review of Skidmore”).

23 Lost History 94–97; see Pojanowski, supra, at 92–96.

24 Lost History 65–68.

25 Southern Goods Corp. v. Bowles, 158 F. 2d 587, 590 (1946).

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did not “have the effect of law,” and “[i]t would be absurd to hold that the courts must subordinate their judgment as to the meaning of a . . . regulation to the mere unsupported opinion of an associate counsel in an administrative department.” 26

This Court did not cite Seminole Rock's “controlling weight” dictum again until 1965, in Udall v. Tallman.27 And though Tallman “did very little to advance the jurispruden- tial understanding of Seminole Rock,” it certainly helped fuel the expansion of so-called “Seminole Rock deference.” 28 From the 1960s on, this Court and lower courts began to cite the Seminole Rock dictum with increasing frequency and in a wider variety of circumstances, but still without much ex- planation. They also increasingly divorced Seminole Rock from Skidmore.29

Auer represents the apotheosis of this line of cases. In the name of what some now call the Auer doctrine, courts have in recent years “mechanically applied and refexively treated” Seminole Rock's dictum “as a constraint upon the careful inquiry that one might ordinarily expect of courts engaged in textual analysis.” 30 Under Auer, judges are forced to subordinate their own views about what the law means to those of a political actor, one who may even be a party to the litigation before the court. After all, if the court agrees that the agency's reading is the best one, Auer does no real work; the doctrine matters only when a court would conclude that the agency's interpretation is not the best or fairest reading of the regulation.

26 Ibid.

27 380 U. S. 1, 4, 17–18 (accepting a regulatory interpretation by the Secretary of the Interior that was consistent, widely disseminated, and heavily relied upon, while not suggesting any disagreement with the Secretary's interpretation).

28 Lost History 80.

29 See generally id., at 68–92, 98.

30 Id., at 53.

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To be sure, Justice Kagan paints a very different picture of Auer, asking us to imagine it riding to the rescue only in cases where the scales of justice are evenly balanced be- tween two equally persuasive readings. But that's a fan- tasy: “If nature knows of such equipoise in legal arguments, the courts at least do not.” 31 In the real world the judge uses his traditional interpretive toolkit, full of canons and tie-breaking rules, to reach a decision about the best and fairest reading of the law. Of course, there are close cases and reasonable judges will sometimes disagree. But every day, in courts throughout this country, judges manage with these traditional tools to reach conclusions about the mean- ing of statutes, rules of procedure, contracts, and the Consti- tution. Yet when it comes to interpreting federal regula- tions, Auer displaces this process and requires judges instead to treat the agency's interpretation as controlling even when it is “not . . . the best one.” 32

If that were not troubling enough, Auer has also become “a doctrine of uncertain scope and application.” 33 This Court has never offered meaningful guidance on how to de- cide whether the agency's reading is “reasonable” enough to demand judicial deference—and lower courts have drawn that line in wildly different places.34 Deepening the confu- sion, this Court and lower courts have, over time, tried to soften Auer's rigidity by declaring that it “might” not apply

31 Scalia, Judicial Deference to Administrative Interpretations of Law,

1989 Duke L. J. 511, 520.

32 Decker v. Northwest Environmental Defense Center, 568 U. S. 597, 613 (2013); see Pauley v. BethEnergy Mines, Inc., 501 U. S. 680, 702 (1991) (the agency's interpretation “need not be the best or most natural one by grammatical or other standards”).

33 Hickman & Thomson, The Chevronization of Auer, 103 Minn. L. Rev.

Headnotes 103, 105 (2019).

34 See Kavanaugh, Fixing Statutory Interpretation, 129 Harv. L. Rev.

2118, 2134–2144 (2016).

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in some ill-defned circumstances, such as when the agency's interpretation “conficts with a prior interpretation” or re- fects a “convenient litigating position” or a “post hoc ratio- nalization” for past agency action.35 All this has resulted in “widespread confusion” about when and how to apply Auer deference.36

In light of Auer's many problems, it should come as no surprise that several Members of this Court,37 along with a great many lower court judges38 and members of the legal

35 Christopher v. SmithKline Beecham Corp., 567 U. S. 142, 155 (2012) (alterations and internal quotation marks omitted).

36 Leske, Splits in the Rock: The Conficting Interpretations of the Semi- nole Rock Deference Doctrine by the U. S. Courts of Appeals, 66 Admin.

“glut of recent cases in which members of the same court are openly di- vided on the proper application of Auer”).

37 See Perez v. Mortgage Bankers Assn., 575 U. S. 92, 107–108 (2015) (Alito, J., concurring in part and concurring in judgment); id., at 108–112 (Scalia, J., concurring in judgment); id., at 119–133 (Thomas, J., concurring in judgment); Decker, 568 U. S., at 615–616 (Roberts, C. J., joined by Alito, J., concurring); id., at 616–621 (Scalia, J., concurring in part and dissenting in part); Talk America, Inc. v. Michigan Bell Telephone Co., 564 U. S. 50, 67–69 (2011) (Scalia, J., concurring); see also Kavanaugh, Keynote Address: Justice Scalia and Deference 19:06 (June 2, 2016), http://vimeo.com/169758593 (predicting “that Auer will someday be over- ruled and that Justice Scalia's dissent in Decker will be the law of the land”).

38 See, e. g., Forrest Gen. Hospital v. Azar, 926 F. 3d 221, 229–230 (CA5 2019); San Diego Gas & Elec. Co. v. FERC, 913 F. 3d 127, 145, n. 4 (CADC 2019) (Randolph, J., dissenting); United States v. Havis, 907 F. 3d 439, 450– 452 (CA6 2018) (Thapar, J., concurring), vacated, 921 F. 3d 628, on reh'g en banc, 927 F. 3d 382 (CA6 2019); Marsh v. J. Alexander's LLC, 905 F. 3d 610, 652–653 (CA9 2018) (Ikuta, J., dissenting); Egan v. Delaware River Port Auth., 851 F. 3d 263, 279 (CA3 2017) (Jordan, J., concurring in judg- ment); Perez v. Loren Cook Co., 803 F. 3d 935, 938, n. 2 (CA8 2015) (en banc); Johnson v. McDonald, 762 F. 3d 1362, 1366–1368 (CA Fed. 2014) (O'Malley, J., concurring); Exelon Generation Co. v. Local 15, Int'l Broth- erhood of Elec. Workers, AFL–CIO, 676 F. 3d 566, 576, n. 5 (CA7 2012).

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academy,39 have questioned Auer's validity and pleaded with this Court to reconsider it.

That's where things stood when James Kisor asked the Department of Veterans Affairs to reopen his disability ben- efts claim. Mr. Kisor served as a United States Marine from 1962 through 1966 and saw combat in Vietnam. In the early 1980s, a VA counselor observed that Mr. Kisor was bat- tling depression and suicidal thoughts and suggested he might be suffering from post-traumatic stress disorder. In light of this, Mr. Kisor fled a claim for disability benefts in 1982. But, in the end, the VA denied the claim.

In 2006, Mr. Kisor sought to reopen the matter. In con- nection with that request, he presented new evidence, in- cluding a psychiatrist's report diagnosing him with PTSD and additional records documenting his service in Vietnam.

The VA reopened Mr. Kisor's claim and granted him disabil- ity benefts effective June 5, 2006, the date he had submitted his new request. Mr. Kisor argued that a VA regulation entitled him to an earlier effective date for disability bene- fts, one tracing back to his original submission in 1982. But the Board of Veterans Appeals concluded that the applicable regulation didn't authorize that relief.

Mr. Kisor appealed the Board's ruling all the way to the Federal Circuit, arguing that the Board had misinterpreted the relevant regulation. The Federal Circuit affrmed. Re- lying on the Auer doctrine, the court held that it had no

39 See, e. g., Hickman & Thomson, supra, at 111–113; Adler, Auer Eva- sions, 16 Geo. J. L. & Pub. Pol'y 1, 26 (2018); Pojanowski, 16 Geo. J. L. & Pub. Pol'y, at 99; Knudsen & Wildermuth, Lessons From the Lost History of Seminole Rock, 22 Geo. Mason L. Rev. 647, 667 (2015); Leske, supra,

Reconciling Modern Doctrines of Deference with the Judiciary's Struc- tural Role, 53 Stan. L. Rev. 1, 108–110 (2000); Anthony, 10 Admin. L. J., at 4–12; Manning, Constitutional Structure and Judicial Deference to Agency Interpretations of Agency Rules, 96 Colum. L. Rev. 612, 696 (1996).

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choice but to treat the Board's interpretation as “ `control- ling' ” unless that interpretation was “ `plainly erroneous or inconsistent with the regulatio[n].' ” 40 Without even trying to determine who had the better reading of the regulation, the Board or Mr. Kisor, the court declared that “[t]he Board's interpretation does not strike us as either plainly erroneous or inconsistent with the VA's regulatory framework.” 41 Case closed.

Mr. Kisor sought and was denied rehearing en banc.

Three judges dissented and joined those who have ques- tioned “the logic behind continued adherence to the [Auer] doctrine”; they argued that, without Auer deference, Mr.

Kisor's reading of the regulation would likely prevail.42 Mr. Kisor then asked us to grant certiorari to reconsider Auer. Thinking it past time to do so, we granted the petition.43

When this Court speaks about the rules governing judicial review of federal agency action, we are not (or shouldn't be) writing on a blank slate or exercising some common-law- making power. We are supposed to be applying the Admin- istrative Procedure Act. The APA is a “seminal” statute that Congress wrote to defne the relationship between courts and agencies.44 Some have even described it as a kind of constitution for our “administrative state.” Yet, re- markably, until today this Court has never made any serious effort to square the Auer doctrine with the APA. Even now, only four Justices make the attempt. And for at least two reasons, their arguments are wholly unpersuasive.

40 Kisor v. Shulkin, 869 F. 3d 1360, 1367 (2017).

41 Id., at 1368.

42 Kisor v. Shulkin, 880 F. 3d 1378, 1379 (CA Fed. 2018) (opinion of O'Malley, J.).

44 Abbott Laboratories v. Gardner, 387 U. S. 136, 140 (1967).

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The frst problem lies in § 706. That provision instructs reviewing courts to “decide all relevant questions of law” and “set aside agency action . . . found to be . . . not in accordance with law.” 45 Determining the meaning of a statute or regu- lation, of course, presents a classic legal question. But in case these directives were not clear enough, the APA further directs courts to “determine the meaning” of any relevant “agency action,” including any rule issued by the agency.46 The APA thus requires a reviewing court to resolve for itself any dispute over the proper interpretation of an agency reg- ulation. A court that, in deference to an agency, adopts something other than the best reading of a regulation isn't “decid[ing]” the relevant “questio[n] of law” or “determin- [ing] the meaning” of the regulation. Instead, it's allowing the agency to dictate the answer to that question. In doing so, the court is abdicating the duty Congress assigned to it in the APA.47

Justice Kagan seeks to address the glaring inconsistency between our judge-made rule and the controlling statute this way. On her account, the APA tells a reviewing court to “determine the meaning” of regulations, but it does not tell the court “how” to do that. Thus, we are told, reading the regulation for itself and deferring to the agency's reading are just two equally valid ways for a court to fulfll its statutory duty to “determine the meaning” of the regulation. Ante, at 581–582.

But the APA isn't as anemic as that. Its unqualifed com- mand requires the court to determine legal questions— including questions about a regulation's meaning—by its own

46 Ibid.; see § 551(13) (defning “agency action”).

47 The case before us doesn't arise under the APA, but the statute that

governs here is plainly modeled on the APA and contains essentially the same commands. It directs a reviewing court to “decide all relevant questions of law” and to “set aside any regulation or any interpretation thereof ” that is “not in accordance with law.” 38 U. S. C. § 7292(d)(1).

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lights, not by those of political appointees or bureaucrats who may even be self-interested litigants in the case at hand.

Nor can there be any doubt that, when Congress wrote the APA, it knew perfectly well how to require judicial deference to an agency when it wished—in fact, Congress repeatedly specifed deferential standards for judicial review elsewhere in the statute.48 But when it comes to the business of inter- preting regulations, no such command exists; instead, Con- gress told courts to “determine” those matters for them- selves. Though one hardly needs to be an academic to recognize the point, “commentators in administrative law have `generally acknowledged' that Section 706 seems to re- quire de novo review on questions of law.” 49

48 See, e. g., § 706(2)(A) (arbitrary and capricious, abuse of discretion);

§ 706(2)(E) (substantial evidence); see also Universal Camera Corp. v.

NLRB, 340 U. S. 474, 482, n. 14 (1951) (noting that as originally proposed, the APA's judicial review provision would have included an explicit re- quirement for courts to accord “due weight” to “the experience, technical competence, specialized knowledge, and legislative policy of the agency involved as well as the discretionary authority conferred upon it” (internal quotation marks omitted)).

49 Duffy, Administrative Common Law in Judicial Review, 77 Texas

1967–1983, 72 Chi.-Kent L. Rev. 1039, 1085–1086 (1997) (noting the “embar- rassing” fact that “the APA appears to compel th[e] conclusion” that “courts should decide all questions of law de novo”). See also, e. g., Ori-

A Nineteenth Century Perspective, 32 Cardozo L. Rev. 2241, 2243 (2011); Garrett, Legislating Chevron, 101 Mich. L. Rev. 2637, 2640 (2003); Molot, Reexamining Marbury in the Administrative State: A Structural and In- stitutional Defense of Judicial Power over Statutory Interpretation, 96 Nw. U. L. Rev. 1239, 1249 (2002); Anthony, 10 Admin. L. J. Am. U., at 9–10; Farina, Statutory Interpretation and the Balance of Power in the Administrative State, 89 Colum. L. Rev. 452, 473, and n. 85 (1989); Starr, Sunstein, Willard, & Morrison, Judicial Review of Administrative Action in a Conservative Era, 39 Admin. L. Rev. 353, 368 (1987) (remarks of Prof.

Sunstein); Pierce & Shapiro, Political and Judicial Review of Agency Ac- tion, 59 Texas L. Rev. 1175, 1182 (1981); 4 K. Davis, Administrative Law § 30.01, pp. 190–191 (1958).

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What the statutory language suggests, experience con- frms. If Auer deference were really just another way for courts to “determine the meaning” of regulations under § 706, you might expect that a fnal judicial “determination” would at least settle, as a matter of precedent, the question of what the regulation “means.” Of course, even after one court has spoken on a regulation's meaning, that court or another might properly give weight to a new agency inter- pretation as part of the court's own decisionmaking process.

See supra, at 597. But in light of National Cable & Tele- communications Assn. v. Brand X Internet Services,50 courts have interpreted Auer as forbidding a court from ever “determin[ing] the meaning” of a regulation with the force that normally attaches to precedent, because an agency is always free to adopt a different view and insist on judicial deference to its new judgment.51 And if an agency can not only control the court's initial decision but also revoke that decision at any time, how can anyone honestly say the court, rather than the agency, ever really “determine[s]” what the regulation means?

To test the point further, consider a statute that tells a court to “determin[e]” an appropriate sentence in a criminal case.52 If the judge said he was sending a defendant to prison for longer than he believed appropriate only in defer- ence to the government's “reasonable” sentencing recom- mendation, would anyone really think that complied with the law? Or take a statute that instructs a court to “determine” whether a consent judgment proposed by the government in a civil antitrust case “is in the public interest.” 53 If a court thought the proposed judgment harmful to the public but decided to defer to the government's “reasonable” contrary

51 See, e. g., In re Lovin, 652 F. 3d 1349, 1353–1354 (CA Fed. 2011); Levy

v. Sterling Holding Co., 544 F. 3d 493, 502–503 (CA3 2008).

52 18 U. S. C. § 3553(a).

53 15 U. S. C. § 16(e)(1).

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view anyway, would anyone suggest the court had complied with Congress's instruction?

Nor does Justice Kagan's reading of § 706 offer any logi- cal stopping point. If courts can “determine the meaning” of a regulation by deferring to any “reasonable” agency read- ing, then why not by deferring to any agency reading? If it were really true that the APA has nothing to say about how courts decide what regulations mean, then it would fol- low that the APA tolerates a rule that “the agency is always right.” And if you fnd yourself in a place as absurd as that, you might want to consider whether you've taken a wrong turn along the way.

The problems don't end there. Auer is also incompatible with the APA's instructions in § 553. That provision re- quires agencies to follow notice-and-comment procedures when issuing or amending legally binding regulations (what the APA calls “substantive rules”), but not when offering mere interpretations of those regulations.54 An agency wishing to adopt or amend a binding regulation thus must publish a proposal in the Federal Register, give interested members of the public an opportunity to submit written com- ments on the proposal, and consider those comments before issuing the fnal regulation. Under the APA, that regula- tion then carries the force of law unless and until it is amended or repealed.55 By contrast, an agency can an- nounce an interpretation of an existing substantive regula- tion without advance warning and in pretty much whatever form it chooses.

Auer effectively nullifes the distinction Congress drew here. Under Auer, courts must treat as “controlling” not only an agency's duly promulgated rules but also its mere interpretations—even ones that appear only in a legal brief,

54 See Perez, 575 U. S., at 95–96.

55 United States v. Nixon, 418 U. S. 683, 695–696 (1974).

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press release, or guidance document issued without affording the public advance notice or a chance to comment. For all practical purposes, “the new interpretation might as well be a new regulation.” 56 Auer thus obliterates a distinction Congress thought vital and supplies agencies with a shortcut around the APA's required procedures for issuing and amending substantive rules that bind the public with the full force and effect of law.57

Think of it this way. We've held that the Constitution's specifcation of a “single, fnely wrought” procedure for the enactment of statutes (bicameralism and presentment) nec- essarily implies that Congress cannot amend an enacted stat- ute without following that procedure—say, by allowing a sin- gle House to change what the law requires.58 By the same logic, Congress's specifcation in the APA of procedures for the creation of new substantive rules (like notice and com- ment) necessarily implies that an agency cannot amend a substantive rule without following those procedures. To hold otherwise, as Auer demands, subverts the APA's design.

Certain amici contend this argument is “out of place” in this particular case because the VA happened to issue the interpretation challenged here in an adjudicative proceed- ing.59 But the premise on which they proceed—that the APA permits agencies to issue “controlling” amendments to their regulations in adjudicative proceedings—is not correct.

Once an agency issues a substantive rule through notice and comment, it can amend that rule only by following the same notice-and-comment procedures.60 Whether an agency is-

56 Perez, 575 U. S., at 127 (Thomas, J., concurring in judgment).

57 Ibid.; see id., at 110 (Scalia, J., concurring in judgment) (Auer lets

agencies “use [interpretive] rules not just to advise the public, but also to bind them”).

58 See INS v. Chadha, 462 U. S. 919, 951, 954 (1983).

59 Brief for Administrative Law Scholars as Amici Curiae 9–10, n. 4.

60 See Perez, 575 U. S., at 101; Marseilles Land & Water Co. v. FERC,

345 F. 3d 916, 920 (CADC 2003).

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sues its interpretation in a press release or something it chooses to call an “adjudication,” all we have is the agency's opinion about what an existing rule means, something that the APA tells us is not binding in a court of law or on the American people.

If that won't work, Justice Kagan tries an alternative argument from nearly the opposite direction. She replies that affording Auer deference to an agency's interpretation of its own rules never offends the APA because the agency's interpretation lacks “the force of law” associated with sub- stantive rules. Agency interpretations lack this force, we are told, because a court always retains the power to decide at least whether the interpretation is entitled to deference.

Ante, at 583–584. But this argument rests on an implausi- bly narrow understanding of what it means for an agency action to bear the force of law. Under Justice Kagan's logic, even a binding substantive rule would lack the force of law because a court retains the power to decide whether the rule is arbitrary and capricious and thus invalid under the APA. But no one believes that. While an agency interpre- tation, just like a substantive rule, “must meet certain condi- tions before it gets deference,” “once it does so [Auer makes it] every bit as binding as a substantive rule.” 61 To suggest that Auer does not make an agency's interpretive guidance “binding o[n] anyone,” ante, at 584, is linguistic hocus-pocus.

If Auer cannot be squared with the text of the APA, Justice Kagan suggests it at least conforms to a reasonable “pre- sumption about congressional intent.” Ante, at 569. The theory seems to be that whenever Congress grants an agency “rulemaking power,” it also implicitly gives the agency “ `the power authoritatively to interpret' ” whatever rules the agency chooses to adopt. Ante, at 569–570. But against

61 Perez, 575 U. S., at 110–111 (Scalia, J., concurring in judgment).

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the clear statutory commands Congress gave us in the APA, what sense does it make to “presume” that Congress really, secretly, wanted courts to treat agency interpretations as binding? Normally, this Court does not allow hidden legis- lative intentions to “muddy” such plainly expressed statu- tory directives.62

Even on its own terms, too, this argument proves pretty muddy. It goes something like this: The drafters of the APA did not intend to “ `signifcantly alter' ” established law governing judicial review of agency action as of 1946; the Auer doctrine was part of that established law; therefore, the APA implicitly requires courts to afford agencies Auer deference. Ante, at 582–583. But neither of this syllo- gism's essential premises stands on solid ground.

Take the major premise—that those who adopted the APA intended to work no change in the established law of judicial review of agency action. Justice Kagan is right, of course, that Attorney General Clark claimed as much shortly after the APA's passage. Ante, at 582. But his view, which re- fected the interests of the executive branch, was far from universally shared. Others, including many members of Congress, thought the APA would clarify, if not expand, the scope of judicial review. For example, Senator McCarran, the Chairman of the Judiciary Committee, wrote that it would be “hard . . . for anyone to argue that this Act did anything other than cut down the `cult of discretion' so far as federal law is concerned.” 63 And both the House and Senate reports on the APA said it was intended to “provid[e] that questions of law are for courts rather than agencies to decide in the last analysis.” 64

62 Milner v. Department of Navy, 562 U. S. 562, 572 (2011).

63 McCarran, Improving “Administrative Justice”: Hearings and Evi- dence; Scope of Judicial Review, 32 A. B. A. J. 827, 893 (1946).

64 H. R. Rep. No. 1980, 79th Cong., 2d Sess., 44 (1946); accord, S. Rep.

No. 752, 79th Cong., 1st Sess., 28 (1945); 92 Cong. Rec. 5654 (1946) (state- ment of Rep. Walter). See also Shepherd, Fierce Compromise: The Ad-

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Just fve years after the APA's passage, this Court seemed to side with those who thought the APA was intended to do more than just summarize existing law. In an opinion by Justice Frankfurter, the Court opined that the APA required courts to assume “more responsibility” for reviewing agency decisions “than some courts ha[d] shown in the past.” 65 One early commentator likewise observed that the APA seemed designed to eliminate all doubt that questions of law “shall be decided by the reviewing Court for itself, and in the exer- cise of its own independent judgment”; “[m]ore explicit words to impose this mandate,” he thought, “could hardly be found.” 66

Justice Kagan's syllogism runs into even more trouble with its minor premise—that the Auer doctrine was a well- established part of the common law background when Con- gress enacted the APA in 1946. As we've seen, this Court planted the seeds of Auer deference for the frst time in dic- tum in Seminole Rock, just a year before Congress passed the APA. See Part I–B, supra. And that dictum did not somehow immediately become an entrenched part of the common law: For years following Seminole Rock, courts and “commentators largely ignored” it,67 and those who took no- tice weren't sure what to make of it. Professor Davis, for example, doubted that the dictum could be “taken at face value” given that it seemed “irreconcilable” with the Court's approach in other cases.68 In truth, when Congress passed

ministrative Procedure Act Emerges from New Deal Politics, 90 Nw.

U. L. Rev. 1557, 1662–1666 (1996).

65 Universal Camera, 340 U. S., at 490 (emphasis added).

66 Dickinson, Administrative Procedure Act: Scope and Grounds of Broadened Judicial Review, 33 A. B. A. J. 434, 516 (1947). See also Ori- gins 990–991 (critiquing the Attorney General's characterization of the APA as “inherently question begging” and unsupported by any analysis).

67 Adler, 16 Geo. J. L. & Pub. Pol'y, at 7; see Lost History 63; Pojanowski,

16 Geo. J. L. & Pub. Pol'y, at 95–96.

68 Davis, 50 Colum. L. Rev., at 597–598; see also Davis, 57 Yale L. J., at

936, n. 72; Newman, 35 Cal. L. Rev., at 521–522.

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the APA the law of judicial review of agency action was in a confused state. During the congressional hearings on the bill, one witness's suggestion that Congress should leave the scope of judicial review “as it now is” drew this fair reply from Representative Walter, chairman of the House Subcom- mittee on Administrative Law and author of the House Re- port on the APA: “You say `as it now is.' Frankly, I do not know what it now is . . . . [T]he Supreme Court apparently changes its mind daily.” 69

Not only is Auer incompatible with the APA; it also sits uneasily with the Constitution. Article III, § 1, provides that the “judicial Power of the United States” is vested ex- clusively in this Court and the lower federal courts. A core component of that judicial power is “ `the duty of interpret- ing [the laws] and applying them in cases properly brought before the courts.' ” 70 As Chief Justice Marshall put it, “[i]t is emphatically the province and duty of the judicial depart- ment to say what the law is.” 71 And never, this Court has warned, should the “judicial power . . . be shared with [the] Executive Branch.” 72 Yet that seems to be exactly what Auer requires.

Our Nation's founders were painfully aware of the dangers of executive and legislative intrusion on judicial decision- making. One of the abuses of royal power that led to the

69 Hearings on H. R. 184 et al. before the House Committee on the Judi-

ciary, 79th Cong., 1st Sess., 38 (1945); see Origins 988–989.

70 Patchak v. Zinke, 583 U. S. 244, 249 (2018) (plurality opinion) (quoting

Massachusetts v. Mellon, 262 U. S. 447, 488 (1923)).

71 Marbury v. Madison, 1 Cranch 137, 177 (1803); see also Wayman v.

Southard, 10 Wheat. 1, 46 (1825) (“[T]he legislature makes, the executive executes, and the judiciary construes the law”); The Federalist No. 78,

p. 467 (C. Rossiter ed. 1961) (A. Hamilton).

72 Miller v. Johnson, 515 U. S. 900, 922 (1995).

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American Revolution was King George's attempt to gain in- fuence over colonial judges.73 Colonial legislatures, too, had interfered with the courts' independence “at the behest of private interests and factions.” 74 These experiences had taught the founders that “ `there is no liberty if the power of judging be not separated from the legislative and executive powers.' ” 75 They knew that when political actors are left free not only to adopt and enforce written laws, but also to control the interpretation of those laws, the legal rights of “litigants with unpopular or minority causes or . . . who be- long to despised or suspect classes” count for little.76 Maybe the powerful, well-heeled, popular, and connected can whee- dle favorable outcomes from a system like that—but what about everyone else? They are left always a little unsure what the law is, at the mercy of political actors and the shift- ing winds of popular opinion, and without the chance for a fair hearing before a neutral judge. The rule of law begins to bleed into the rule of men.

Experiencing all this in their own time, the founders sought to ensure that those who came after them would not.

73 See Declaration of Independence ¶11.

74 Plaut v. Spendthrift Farm, Inc., 514 U. S. 211, 220–221 (1995).

75 The Federalist No. 78, at 466.

76 Palmore v. United States, 411 U. S. 389, 412 (1973) (Douglas, J., dis- senting); see Oil States Energy Services, LLC v. Greene's Energy Group, LLC, 584 U. S. 325, 348 (2018) (Gorsuch, J., dissenting) (“[W]hen an inde- pendent Judiciary gives ground to bureaucrats in the adjudication of cases, the losers will often prove the unpopular and vulnerable”); United States

v. Hatter, 532 U. S. 557, 568–569 (2001) (quoting John Marshall's admoni-

tion that a judge who may be called on to decide a dispute “ `between the most powerful individual in the community, and the poorest and most unpopular,' ” must be “ `perfectly and completely independent, with noth- ing to infuence or control him but God and his conscience' ” (alterations omitted)); Jackson, The Meaning of Statutes: What Congress Says or What the Court Says, 34 A. B. A. J. 535, 536 (1948) (“[T]he interpretation of [the laws'] fair meaning . . . should be made by judges as independent of politics as humanly possible and not serving the interests of the class for whom, or a majority by whom, legislation is enacted”).

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Believing that “[n]o maxim was better established” than “that the power of making ought to be kept distinct from that of expounding, the laws,” 77 they designed a judiciary that would be able to interpret the laws “free from potential domination by other branches of government.” 78 To that end, they resisted proposals that would have subjected judi- cial decisions to review by political actors.79 And they re- jected the British tradition of using the upper house of the legislature as a court of last resort, out of fear that a body with “even a partial agency in passing bad laws” would oper- ate under the “same spirit” in “interpreting them.” 80 In- stead, they gave federal judges life tenure, subject only to removal by impeachment; and they guaranteed that the other branches could not reduce judges' compensation so long as they remained in offce.

The founders afforded these extraordinary powers and protections not for the comfort of judges, but so that an inde- pendent judiciary could better guard the people from the ar- bitrary use of governmental power. And sitting atop the judicial branch, this Court has always carried a special duty to “jealously guar[d]” the Constitution's promise of judicial independence.81 So we have long resisted any effort by the other branches to “ `usurp a court's power to interpret and apply the law to the circumstances before it.' ” 82 The judi- cial power to interpret the law, this Court has held, “can no more be shared with another branch than the Chief Execu- tive, for example, can share with the Judiciary the veto

77 2 Records of the Federal Convention of 1787, p. 75 (M. Farrand ed.

1911); see also Manning, 96 Colum. L. Rev., at 640–648.

78 United States v. Will, 449 U. S. 200, 218 (1980).

79 See The Federalist No. 81, at 482 (A. Hamilton).

80 Id., at 483.

81 Northern Pipeline Constr. Co. v. Marathon Pipe Line Co., 458 U. S.

50, 60 (1982) (plurality opinion).

82 Bank Markazi v. Peterson, 578 U. S. 212, 225 (2016) (alterations

omitted).

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power, or the Congress share with the Judiciary the power to override a Presidential veto.” 83

Auer represents no trivial threat to these foundational principles. Under the APA, substantive rules issued by fed- eral agencies through notice-and-comment procedures bear “the `force and effect of law' ” 84 and are part of the body of federal law, binding on private individuals, that the Constitu- tion charges federal judges with interpreting. Yet Auer tells the judge that he must interpret these binding laws to mean not what he thinks they mean, but what an executive agency says they mean. Unlike Article III judges, execu- tive offcials are not, nor are they supposed to be, “wholly impartial.” 85 They have their own interests, their own con- stituencies, and their own policy goals—and when interpret- ing a regulation, they may choose to “press the case for the side [they] represen[t]” instead of adopting the fairest and best reading.86 Auer thus means that, far from being “kept distinct,” the powers of making, enforcing, and interpreting laws are united in the same hands—and in the process a cor- nerstone of the rule of law is compromised.

Consider an analogy. The Court has long held that Con- gress cannot “ `indirectly control the action of the courts, by requiring of them a construction of the law according to its

83 Stern v. Marshall, 564 U. S. 462, 483 (2011) (internal quotation marks

omitted).

84 Perez, 575 U. S., at 96; see Chrysler Corp. v. Brown, 441 U. S. 281,

295–296 (1979). To be sure, our precedent allowing executive agencies to issue legally binding regulations to govern private conduct may raise constitutional questions of its own. See, e. g., Department of Transporta- tion v. Association of American Railroads, 575 U. S. 43, 70–76 (2015) (Thomas, J., concurring in judgment).

85 Cox, Judge Learned Hand and the Interpretation of Statutes, 60 Harv.

86 Id., at 390–391, and n. 58; see also Kavanaugh, 129 Harv. L. Rev., at

2151 (in pursuing their policy goals, “[e]xecutive branch agencies often think they can take a particular action unless it is clearly forbidden”).

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own views.' ” 87 If Congress disagrees with how courts are interpreting an existing statute, it is free to amend the stat- ute to establish a different rule going forward. What it can- not do is issue “a mandate . . . to compel the courts to con- strue and apply [existing law], not according to the judicial, but according to the legislative judgment.” 88 As early as 1804, when a lawyer argued before this Court that an Act of the North Carolina legislature could not control the Court's construction of an earlier North Carolina statute because “[t]o declare what the law is, or has been, is a judicial power,” not a legislative power, the Court stopped him, deeming the point too plain for argument.89

But if the legislature can't control a judge's interpretation of an existing statute, how can an executive agency control a judge's interpretation of an existing and equally binding regulation? Auer allows an agency to do exactly what this Court has always said a legislature cannot do: “compel the courts to construe and apply” a law on the books, “not ac- cording to the judicial . . . judgment,” but according to the judgment of another branch.90 When we defer to an agency interpretation that differs from what we believe to be the best interpretation of the law, we compromise our judicial independence and deny the people who come before us the impartial judgment that the Constitution guarantees them.

And we mislead those whom we serve by placing a judicial imprimatur on what is, in fact, no more than an exercise of raw political executive power.91

87 Plaut, 514 U. S., at 225 (quoting T. Cooley, Constitutional Limitations

95 (1868)).

88 Id., at 95; see also Bank Markazi, 578 U. S., at 225, n. 17.

89 Ogden v. Blackledge, 2 Cranch 272, 277.

90 Cooley, supra, at 95.

91 Cf. Cary v. Curtis, 3 How. 236, 253, 257 (1845) (Story, J., dissenting) (if

the “right to interpret the laws” is taken away from courts and “confded to an executive functionary,” then “the judicial power, designed by the Constitution to be the fnal and appellate jurisdiction to interpret our laws, is superseded in its most vital and important functions”).

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What do our colleagues have to say about these concerns? A majority has nothing to offer, and Justice Kagan dis- misses them out of hand. In fact, she barely mentions the Constitution, other than to assure us that Auer does not allow agencies to “usur[p] the interpretive role of courts” because “courts retain a frm grip on the interpretive func- tion” through their ability to decide whether Auer deference applies. Ante, at 586. But that is no assurance at all. The judicial power has always been understood to provide the people with a neutral arbiter who bears the responsibility and duty to “expound and interpret” the governing law, not just the power to say whether someone else's interpretation, let alone the interpretation of a self-interested political actor, is “reasonable.” 92

To be sure, it's conceivable that Congress might seek to limit the ability of judges to remedy an adverse agency ac- tion. It might, for example, provide that a court shall have power to set aside agency action pursuant to a regulation only if the action was based on an unreasonable interpreta- tion of the regulation. But even assuming the constitution- ality of a hypothetical statute like that, Auer is different. It does not limit the scope of the judicial power; instead, it seeks to coopt the judicial power by requiring an Article III judge to decide a case before him according to principles that he believes do not accurately refect the law. Under Auer, a judge is required to lay aside his independent judgment and declare affrmatively that a regulation means what the agency says it means—and, thus, that the law is what the agency says it is. Then the judge is compelled to exercise his judicial authority to adjust private rights and obligations based on the agency's (mis)understanding of the law. If Auer were a statute, it would not be an exercise of Con- gress's “power (within limits) to tell the courts what classes

92 Marbury, 1 Cranch, at 177.

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of cases they may decide,” or what relief they may supply, but a forbidden attempt “to prescribe or superintend how they decide those cases.” 93 And in the absence of any stat- ute like that, this Court surely should not so freely give away to the executive branch its assigned responsibility to inter- pret the laws. “Abdication of responsibility is not part of the constitutional design.” 94

In the end, Justice Kagan's only real reply is this: How- ever misguided it may be to hand over our interpretive pow- ers to executive agencies, at least there isn't a mountain of empirical evidence showing that agencies have used this power to deliberately write “vague and open-ended” regula- tions to maximize their interpretive leeway. Ante, at 585.

But even this misses the point. Whether or not regulations are “ `designed' ” to be vague, ibid., many can be read in dif- ferent ways, especially when new and unanticipated applica- tions arise; cases like that come before the courts all the time. Without Auer's shadow hanging over them, parties would receive a fair hearing before an impartial judge. The agency's interpretation would sometimes be rejected; and that, in turn, might lead it to solicit public comment on possi- ble amendments to the regulation, which would provide an opportunity for public input that might produce better policy. But with Auer, there is no fair hearing and no need for the agency to amend the regulation through notice and comment. Whether purposeful or not, the agency's fail- ure to write a clear regulation winds up increasing its power, allowing it to both write and interpret rules that bear the force of law—in the process uniting powers the Constitu- tion deliberately separated and denying the people their right to an independent judicial determination of the law's meaning.

93 Arlington v. FCC, 569 U. S. 290, 297 (2013) (emphasis added).

94 Clinton v. City of New York, 524 U. S. 417, 452 (1998) (Kennedy, J.,

concurring).

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Lacking support elsewhere, Justice Kagan is forced to resort to policy arguments to defend Auer. But even the most sensible policy argument would not empower us to ignore the plain language of the APA or the demands of the Constitution. And as we've seen, those documents refect a very different “policy” judgment by the people and their representatives. Besides, the policy arguments offered today are not just unpersuasive, they are troubling.

Take the frst and boldest offering. Justice Kagan sug- gests that determining the meaning of a regulation is largely a matter of fguring out what the “person who wrote it . . . intended.” Ante, at 570. In this way, we're told, a legally binding regulation isn't all that different from “a memo or an e-mail”—if you “[w]ant to know what [it] means,” you'd better “[a]sk its author.” Ibid. But the federal govern- ment's substantive rules are not like memos or e-mails; they are binding edicts that carry the force of law for all citizens.

And if the rule of law means anything, it means that we are governed by the public meaning of the words found in statutes and regulations, not by their authors' private inten- tions. This is a vital part of what it means to have “a government of laws, and not of men.” 95 When judges inter- pret a regulation, what we are trying to get at, as Justice Holmes explained long ago, is not the “particular intent” of those who wrote it, but “what [its] words would mean [to] a normal speaker of English . . . in the circumstances in which they were used.” 96 If the best reading of the regulation turns out to be something other than what

95 Marbury, 1 Cranch, at 163.

96 Holmes, The Theory of Legal Interpretation, 12 Harv. L. Rev. 417, 417–418 (1899); see INS v. Cardoza-Fonseca, 480 U. S. 421, 452–453 (1987) (Scalia, J., concurring in judgment) (“Judges interpret laws rather than reconstruct legislators' intentions”); H. Hart & A. Sacks, The Legal Proc- ess 1375 (1994) (“Unenacted intentions or wishes cannot be given effect as law”).

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the agency claims to have intended, the agency is free to rewrite the regulation; but its secret intentions are not the law.

Nor does Justice Kagan's account of the interpretive process even wind up supporting Auer. If a court's goal in interpreting a regulation really were to determine what its author “intended,” Auer would be an almost complete mis- match with the goal. Agency personnel change over time, and an agency's policy priorities may shift dramatically from one presidential administration to another. Yet Auer tells courts that they must defer to the agency's current view of what the regulation ought to mean, which may or may not correspond to the views of those who actually wrote it. If interpreting a regulation really were just like reading an e-mail, Auer would be like seeking guidance about the e-mail's meaning, years or decades later, from the latest user of the computer from which the e-mail was sent. We've re- peatedly rejected that approach in the context of statutory interpretation. While Members of this Court sometimes disagree about the usefulness of pre-enactment legislative history, we all agree that legislators' statements about the meaning of an already-enacted statute are not “ `a legitimate tool of statutory interpretation,' ” much less a controlling one.97 So why on earth would we give “controlling weight” to an agency's statements about the meaning of an already- promulgated regulation?

Proceeding farther down this doubtful path, Justice Kagan asserts that resolving ambiguities in a regulation “sounds more in policy than in law” and is thus a task more suited to executive offcials than judges. Ante, at 571. But

that we are governed not by the shifting whims of politicians and bureaucrats, but by written laws whose meaning is fxed and ascertainable—if not by all members of the public, then

97 United States v. Woods, 571 U. S. 31, 48 (2013).

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at least by lawyers who can advise them and judges who must apply the law to individual cases guided by the neu- tral principles found in our traditional tools of inter- pretation. The text of the regulation is treated as the law, and the agency's policy judgment has the force of law only insofar as it is embodied in the regulatory text. If “new issues demanding new policy calls” arise that aren't addressed in existing regulations, ante, at 572, the solu- tion is for the agency to promulgate new regulations using the notice-and-comment procedures set forth in the APA. But an agency has no warrant to compel judges to change the law to conform with the agency's current policy preferences.

To be sure, during the period of Auer's ascendancy some suggested that the meaning of written law is always “radi- cally indeterminate” and that judges expounding it are, “for the most part, guided by policy—not text.” 98 And in an en- vironment like that it was perhaps thought a small step to conclude that, if legal disputes are going to be resolved on political grounds, then they ought to be resolved by real poli- ticians in the executive branch rather than ersatz politicians on the bench. But the proposed cure proved worse than the disease. Arguments like these surrendered the judgment embodied in our Constitution and the APA that courts owe the people they serve their independent legal judgment about the law's meaning. Besides, we've long since come to realize that the real cure doesn't lie in turning judges into rubber stamps for politicians, but in redirecting the judge's interpretive task back to its roots, away from open-ended policy appeals and speculation about legislative intentions and toward the traditional tools of interpretation judges have employed for centuries to elucidate the law's original

98 O'Scannlain, “We Are All Textualists Now”: The Legacy of Justice Antonin Scalia, 91 St. John's L. Rev. 303, 304–305 (2017) (contesting the radical indeterminacy of legal texts).

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public meaning. Today it is even said that we judges are, to one degree or another, “all textualists now.” 99

Pursuing a more modest tack, Justice Kagan next sug- gests that Auer is justifed by the respect due agencies' “technical” expertise. Ante, at 571. But no one doubts that courts should pay close attention to an expert agency's views on technical questions in its feld. Just as a court “would want to know what John Henry Wigmore said about an issue of evidence law [or] what Arthur Corbin thought about a matter of contract law,” so too should courts care- fully consider what the Food and Drug Administration thinks about how its prescription drug safety regulations operate.100 The fact remains, however, that even agency experts “can be wrong; even Homer nodded.” 101 Skidmore and the tradi- tional approach it embodied recognized both of these facts of life long ago, explaining that, while courts should of course afford respectful consideration to the expert agency's views, they must remain open to competing expert and other evi- dence supplied in an adversarial setting. Respect for an agency's technical expertise demands no more.

Justice Kagan's fnal policy argument is that Auer pro- motes “consistency” and “uniformity” in the interpretation of regulations. Ante, at 572–573. If we let courts decide what regulations mean, she warns, they might disagree, and it might take some time for higher courts to resolve those disagreements. But consistency and uniformity are hardly grounds on which Auer's advocates should wish to fght.

The judicial process is how we settle disputes about the meaning of written law, and our judicial system is more than capable of producing a single, uniform, and stable interpreta- tion that will last until the regulation is amended or re- pealed. Meanwhile, under Auer courts often disagree about

99 Id., at 313; see Siegel, Textualism and Contextualism in Administra-

tive Law, 78 B. U. L. Rev. 1023, 1057 (1998).

100 Larkin & Slattery, 42 Harv. J. L. & Pub. Pol'y, at 647.

101 Ibid.

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whether deference is warranted, see supra, at 600–601, and a regulation's “meaning” can be transformed with the stroke of a pen any time there is a new presidential administration.

“Consistency,” “uniformity,” and stability in the law are hardly among Auer's crowning achievements.

In the end, a majority declines to endorse Justice Kagan's arguments and insists only that, even if Auer is not “right and well-reasoned,” we're stuck with it because of the respect due precedent. Ante, at 588.

But notice: While pretending to bow to stare decisis, the ma- jority goes about reshaping our precedent in new and experi- mental ways. True, the majority admits, this Court has in the past accorded Auer deference “ `refexive[ly],' ” “without signifcant analysis of the underlying regulation” or “careful attention to [its] nature and context,” and encouraged lower courts to do the same. Ante, at 574. But no more. From now on, the majority says, not only must judges “exhaust all the `traditional tools' of construction” to decide whether the agency's interpretation is “reasonable,” they must also make “an independent inquiry into whether the character and con- text of the agency interpretation” justifes deference. Ante, at 575–576. The majority candidly admits that it fnds it impossible to “reduce” this new inquiry “to any exhaustive test,” so it settles for laying out some “markers.” Ante, at 576–577. What are the markers? We are told that courts should often—but not always—withhold deference from an interpretation offered by mid-level agency staff; often—but not always—withhold deference from a nontechnical, “prosaic-seeming” interpretation; often—but not always— withhold deference from an interpretation advanced for the frst time in an amicus brief; and often—but not al- ways—withhold deference from an interpretation that con- ficts with an earlier one. See ante, at 576–579. The only certainty in all this is that the majority isn't really much

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moved by stare decisis; everyone recognizes, to one degree or another, that Auer cannot stand. And between our re- maining choices—continuing to make up new deference rules, or returning to the text of the APA and the approach to judicial review that prevailed for most of our history—the answer should have been easy.

There are serious questions about whether stare decisis should apply here at all. To be sure, Auer's narrow holding about the meaning of the regulation at issue in that case may be entitled to stare decisis effect. The same may be true for the specifc holdings in other cases where this Court has applied Auer deference. But does stare decisis extend be- yond those discrete holdings and bind future Members of this Court to apply Auer's broader deference framework?

It seems doubtful that stare decisis demands that much.

We are not dealing with a precedent that purported to settle the meaning of a single statute or regulation or resolve a particular case. The Auer doctrine claims to do much more than that—to prescribe an interpretive methodology govern- ing every future dispute over the meaning of every regula- tion. In other contexts, we do not regard statements in our opinions about such generally applicable interpretive meth- ods, like the proper weight to afford historical practice in constitutional cases or legislative history in statutory cases, as binding future Justices with the full force of horizontal stare decisis.102 Why, then, should we regard as binding Auer's statements about the weight to afford agencies' inter- pretations in regulatory cases? To the extent Auer pur- ports to dictate “the interpretive inferences that future Justices must draw in construing statutes and regulations

102 See Criddle & Staszewski, Against Methodological Stare Decisis, 102 Geo. L. J. 1573, 1577, and n. 12 (2014); C. Oldfather, Methodological Stare Decisis and Constitutional Interpretation, in Precedent in the United States Supreme Court 135, 135–136 (C. Peters ed. 2013).

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that the Court has never engaged,” it may well “exceed the limits of stare decisis.” 103

Even if our past expressions of support for Auer deference bear some precedential force, they certainly are not entitled (as the majority suggests, ante, at 587–588) to the special, heightened form of stare decisis we reserve for narrow statu- tory decisions. In contrast to precedents that fx the mean- ing of particular statutes and generate reliance interests in the process, the Auer doctrine is an abstract default rule of interpretive methodology that settles nothing of its own force. And this Court has recognized that it is “inconsistent with the Court's proper role” to insist that Congress exercise its legislative power to overturn such erroneous and judi- cially invented “default rule[s].” 104 That should be espe- cially so here because Auer 's default rule undermines judicial independence, which this Court has a special respon- sibility to defend.

Nor is it entirely clear that Congress could overturn the Auer doctrine legislatively. The majority describes Auer as a “presumption” about how courts should interpret statutes granting rulemaking power to agencies. Ante, at 573.

Congress can, of course, rebut the presumption on a statute- by-statute basis, or even for all past statutes. But can Con- gress eliminate the Auer presumption for future statutes?

Perhaps—but legislation like that would raise questions, which the majority does not address, about the ability of one Congress to entrench its preferences by attempting to con- trol the interpretation of legislation enacted by future Con-

103 Kozel, Statutory Interpretation, Administrative Deference, and the Law of Stare Decisis, 97 Texas L. Rev. 1125, 1159 (2019); see Raso & Eskridge, Chevron as a Canon, Not a Precedent: An Empirical Study of What Motivates Justices in Agency Deference Cases, 110 Colum. L. Rev.

1727, 1765–1766 (2010) (concluding that in practice, this Court has not treated administrative-deference regimes such as Chevron and Auer as binding precedents).

104 South Dakota v. Wayfair, Inc., 585 U. S. 162, 183 (2018).

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gresses.105 We should not be in the business of tossing “ `balls . . . into Congress's court,' ” ante, at 587, that would explode with constitutional questions if Congress tried to pick them up.

Even assuming for argument's sake that standard stare de- cisis considerations apply, they still do not require us to re- tain Auer. Even the majority implicitly recognizes this much, as it proceeds to vacate a lower court judgment that faithfully applied Auer and instruct that court to try again using the majority's new directions. If stare decisis allows us so freely to remodel Auer, it's hard to see on what account it might require us to retain it.

We do not lightly overturn precedents, and we seek always to honor the thoughtful guidance of those who have preceded us. At the same time, everyone agrees that stare decisis is not an “ `inexorable command,' ” 106 and this Court should not always remain bound to decisions whose “rationale no longer withstands `careful analysis.' ” 107 Recognizing the need for balance in this area, the Court has, over time, fashioned prin- ciples to guide our treatment of precedent. Those principles call on us to consider factors such as “the quality of [the precedent's] reasoning, the workability of the rule it estab- lished, its consistency with other related decisions, develop- ments since the decision was handed down, and reliance on the decision.” 108 As applied to Auer, all of these considera-

105 See, e. g., Alexander & Prakash, Mother May I? Imposing Manda- tory Prospective Rules of Statutory Interpretation, 20 Const. Comment.

97 (2003); Elhauge, Preference-Estimating Statutory Default Rules, 102 Colum. L. Rev. 2027, 2109–2110, and nn. 231–233 (2002).

106 Pearson v. Callahan, 555 U. S. 223, 233 (2009).

107 Arizona v. Gant, 556 U. S. 332, 348 (2009) (quoting Lawrence v. Texas,

108 Janus v. State, County, and Municipal Employees, 585 U. S. 878, 917

(2018).

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tions weigh strongly in favor of bidding farewell to the doc- trine rather than keeping it on life support.

First, we've already seen that no persuasive rationale sup- ports Auer. From its humble origins as an unexplained bit of dictum in a wartime case about emergency price controls, the Auer doctrine evolved into a rigid rule of deference—all without any serious attempt by this Court to rationalize it or reconcile it with the APA, the Constitution, or traditional modes of judicial review. See Part I, supra. Even its fercest defenders acknowledge that “Auer deference has not remained static over time” and urge the Court to continue to “shape” and “refn[e]” the doctrine.109 Today's decision attempts just such a “refnement” by hedging Auer with new qualifcations and limitations. See ante, at 573–579. This shifting ground “undermin[es] the force of stare decisis.” 110 Second, today's ruling all but admits that Auer has not proved to be a workable standard. Even before this latest overhaul, uncertainty surrounding Auer's scope and applica- tion had caused many to question whether there was any “practical beneft” in continuing to apply Auer “rather than a less deferential but more fexible and open-ended standard like Skidmore.” 111 See supra, at 600–601. Nor does the majority's kinder, gentler version of Auer promise to solve the problem. On the contrary, its newly mandated inquiry into the “character and context of the agency interpreta- tion,” which it admits cannot be reduced “to any exhaustive test,” ante, at 576, seems destined only to compound the con- fusion. See supra, at 625–626. Many words come to mind to describe the tasks we assign lower court judges today, but “workable” is not among them.

109 Brief for Administrative Law Scholars as Amici Curiae 13.

110 Knick v. Township of Scott, 588 U. S. 180, 204 (2019); see Janus, 585

U. S., at 928. See also Lost History 54–92; Knudsen & Wildermuth, 22

Geo. Mason L. Rev., at 658–664.

111 Hickman & Thomson, 103 Minn. L. Rev. Headnotes, at 110.

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Third, the Auer doctrine is, as we have also already seen, out of step with how courts normally interpret written laws.

When we interpret a regulation, we typically (at least when there is no agency say-so) proceed in the same way we would when interpreting any other written law: We “begin our in- terpretation of the regulation with its text” and, if the text is unclear, we “turn to other canons of interpretation” and tie-breaking rules to resolve the ambiguity.112 And when we interpret an ambiguous statute, we never ask what cur- rent members of Congress think it means; in fact, we've held unanimously that legislators' post-enactment views about a statute's meaning are not even a “ `legitimate tool of statu- tory interpretation.' ” 113 Affording “controlling weight” to regulators' post-promulgation views about the meaning of an ambiguous regulation is hard to square with these usual judi- cial practices.114

Fourth, the explosive growth of the administrative state over the last half-century has exacerbated Auer's potential for mischief. When the Court frst uttered its dictum in Seminole Rock, the administrative state was new and the APA was only a gleam in Congress's eye. Even 20 years

112 Green v. Brennan, 578 U. S. 547, 553–554 (2016); see, e. g., National Assn. of Home Builders v. Defenders of Wildlife, 551 U. S. 644, 668–669 (2007) (construing regulation in light of text, history, and canon against surplusage).

113 Woods, 571 U. S., at 48; see also Bruesewitz v. Wyeth LLC, 562 U. S. 223, 242 (2011); Jones v. United States, 526 U. S. 227, 238 (1999); United States v. Mine Workers, 330 U. S. 258, 281–282 (1947).

114 To be sure, under Chevron U. S. A. Inc. v. Natural Resources Defense Council, Inc., 467 U. S. 837 (1984), we sometimes defer to an agency's construction of a statute. But there are serious questions, too, about whether that doctrine comports with the APA and the Constitution. See,

e. g., Pereira v. Sessions, 585 U. S. 198, 219–221 (2018) (Kennedy, J., concur-

ring); Michigan v. EPA, 576 U. S. 743, 760–764 (2015) (Thomas, J., concur- ring); Perez, 575 U. S., at 109–110 (Scalia, J., concurring in judgment). Re- gardless, it would be a mistake to suppose that Auer is in any way a “logical corollary to Chevron.” Decker, 568 U. S., at 620 (Scalia, J., con- curring in part and dissenting in part).

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later, when the Court began reviving the Seminole Rock dictum and turning it into a new deference doctrine, it was not yet apparent how pervasive the administrative state would become in the lives of ordinary Americans. Now, in the 21st century, “[t]he administrative state wields vast power and touches almost every aspect of daily life.” 115 Among other things, it produces “ `reams of regula- tions' ” 116—so many that they dwarf the statutes enacted by Congress. As of 2018, the Code of Federal Regulations flled 242 volumes and was about 185,000 pages long, almost quadruple the length of the most recent edition of the U. S.

Code.117 And agencies add thousands more pages of regula- tions every year. Whether you think this administrative fecundity is a good or a bad thing, it surely means that the cost of continuing to deny citizens an impartial judicial hear- ing on the meaning of disputed regulations has increased dramatically since this Court started down this road.

Fifth, Auer has generated no serious reliance interests.

The only parties that might have relied on Auer's promise of deference are agencies that use post hoc interpretations to bypass the APA's notice-and-comment procedures. But this Court has never suggested that the convenience of govern- ment offcials should count in the balance of stare decisis, especially when weighed against the interests of citizens in a fair hearing before an independent judge and a stable and knowable set of laws. In short, “ `[t]he fact that [agencies] may view [Auer deference] as an entitlement does not estab- lish the sort of reliance interest that could outweigh the

115 Arlington, 569 U. S., at 313 (Roberts, C. J., dissenting) (internal quo-

tation marks omitted).

116 Federal Maritime Comm'n v. South Carolina Ports Authority, 535

117 See Offce of the Federal Register, Code of Federal Regulations: Total Pages 1938–1949, and Total Volumes and Pages 1950–2018, http://www. federalregister.gov/uploads/2019/04/cfrTotalPages2018.pdf; United States

v. Secretary, Fla. Dept. of Corrections, 778 F. 3d 1223, 1225 (CA11 2015).

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countervailing interest' ” of all citizens “ `in having their con- stitutional rights fully protected.' ” 118

Coming closer to the mark, the majority worries that “abandoning Auer deference would cast doubt on many set- tled constructions” of regulations on which regulated parties might have relied. Ante, at 587. But, again, decisions con- struing particular regulations might retain stare decisis effect even if the Court announced that it would no longer adhere to Auer's interpretive methodology. After all, deci- sions construing particular statutes continue to command re- spect even when the interpretive methods that led to those constructions fall out of favor. Besides, if the majority is correct that abandoning Auer would require revisiting regu- latory constructions that were upheld based on Auer defer- ence, the majority's revision of Auer will yield exactly the same result. There are innumerable lower court decisions that have followed this Court's lead and afforded Auer defer- ence mechanically, without conducting the inquiry the Court now holds is required. Today's ruling casts no less doubt on the continuing validity of those decisions than we would if we simply moved on from Auer.

*

Overruling Auer would have taken us directly back to Skidmore, liberating courts to decide cases based on their independent judgment and “follow [the] agency's [view] only to the extent it is persuasive.” 119 By contrast, the ma- jority's attempt to remodel Auer's rule into a multi-step, multi-factor inquiry guarantees more uncertainty and much litigation. Proceeding in this convoluted way burdens our colleagues on the lower courts, who will have to spend time debating deference that they could have spent interpreting

118 Janus, 585 U. S., at 927 (quoting Gant, 556 U. S., at 349).

119 Gonzales v. Oregon, 546 U. S. 243, 269 (2006); see Christopher, 567

U. S., at 159 (applying Skidmore after concluding that agency's interpreta-

tion did not merit Auer deference).

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disputed regulations. It also continues to deny the people who come before us the neutral forum for their disputes that they rightly expect and deserve.

But this cloud may have a silver lining: The majority leaves Auer so riddled with holes that, when all is said and done, courts may fnd that it does not constrain their inde- pendent judgment any more than Skidmore. As reengin- eered, Auer requires courts to “exhaust all the `traditional tools' of construction” before they even consider deferring to an agency. Ante, at 575. And those tools include all sorts of tie-breaking rules for resolving ambiguity even in the clos- est cases. Courts manage to make do with these tools in many other areas of the law, so one might hope they will hardly ever fnd them inadequate here. And if they do, they will now have to conduct a further inquiry that includes so few frm guides and so many cryptic “markers” that they will rarely, if ever, have to defer to an agency regulatory interpretation that differs from what they believe is the best and fairest reading.

But whatever happens, this case hardly promises to be this Court's last word on Auer. If today's opinion ends up reduc- ing Auer to the role of a tin god—offcious, but ultimately powerless—then a future Court should candidly admit as much and stop requiring litigants and lower courts to pay token homage to it. Alternatively, if Auer proves more re- silient, this Court should reassert its responsibility to say what the law is and afford the people the neutral forum for their disputes that they expect and deserve.

Justice Kavanaugh, with whom Justice Alito joins, concurring in the judgment.

I agree with Justice Gorsuch's conclusion that the Auer deference doctrine should be formally retired. I write sepa- rately to emphasize two points.

First, I agree with The Chief Justice that “the distance between the majority and Justice Gorsuch is not as great

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as it may initially appear.” Ante, at 591 (opinion concurring in part). The majority's approach in Part II−B of its opinion closely resembles the argument advanced by the Solicitor General to “clarif[y] and narro[w]” Auer. Brief for Re- spondent 15. Importantly, the majority borrows from foot- note 9 of this Court's opinion in Chevron to say that a reviewing court must “exhaust all the `traditional tools' of construction” before concluding that an agency rule is ambig- uous and deferring to an agency's reasonable interpretation.

Ante, at 575 (quoting Chevron U. S. A. Inc. v. Natural Re- sources Defense Council, Inc., 467 U. S. 837, 843, n. 9 (1984)).

If a reviewing court employs all of the traditional tools of construction, the court will almost always reach a conclusion about the best interpretation of the regulation at issue.

After doing so, the court then will have no need to adopt or defer to an agency's contrary interpretation. In other words, the footnote 9 principle, taken seriously, means that courts will have no reason or basis to put a thumb on the scale in favor of an agency when courts interpret agency regulations.

Formally rejecting Auer would have been a more direct approach, but rigorously applying footnote 9 should lead in most cases to the same general destination. Umpires in games at Wrigley Field do not defer to the Cubs manager's in-game interpretation of Wrigley's ground rules. So too here.

To be sure, some cases involve regulations that employ broad and open-ended terms like “reasonable, ” “appro- priate,” “feasible,” or “practicable.” Those kinds of terms afford agencies broad policy discretion, and courts allow an agency to reasonably exercise its discretion to choose among the options allowed by the text of the rule. But that is more State Farm than Auer. See Motor Vehicle Mfrs. Assn. of United States, Inc. v. State Farm Mut. Automobile Ins. Co.,

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In short, after today's decision, a judge should engage in appropriately rigorous scrutiny of an agency's interpretation of a regulation, and can simultaneously be appropriately def- erential to an agency's reasonable policy choices within the discretion allowed by a regulation.

Second, I also agree with The Chief Justice that “[i]s- sues surrounding judicial deference to agency interpreta- tions of their own regulations are distinct from those raised in connection with judicial deference to agency interpreta- tions of statutes enacted by Congress.” Ante, at 591. Like The Chief Justice, “I do not regard the Court's decision” not to formally overrule Auer “to touch upon the latter question.” Ibid.