Whether the Court should overrule Auer and Seminole Rock deference to an agency’s reasonable interpretation of its own genuinely ambiguous regulation.
Holding
No. The Court retained Auer deference, but sharply restated and reinforced the doctrine’s limits.
Reasoning
Auer deference rests on a rebuttable presumption about congressional intent. When Congress delegates authority to an agency to issue regulations, it generally expects the agency to resolve genuine ambiguities in those regulations. Agencies may possess special knowledge of the rulemaking scheme, technical expertise, policymaking competence, political accountability, and the ability to promote nationally uniform interpretations.
The Court rejected the claim that Auer conflicts with the Administrative Procedure Act’s command that courts decide questions of law and determine the meaning of agency action. Courts still independently interpret the regulation using all ordinary tools of construction, decide whether genuine ambiguity remains, test whether the agency’s view is reasonable, and determine whether the interpretation deserves deference. When those conditions are met, deferring is itself a permissible way to determine the meaning of an ambiguous rule.
The Court also rejected the argument that Auer lets agencies evade the APA’s notice-and-comment requirements. An interpretive rule does not itself bind the public or furnish the basis for enforcement; enforcement must rest on a valid legislative regulation adopted through notice and comment. Moreover, a court may reject an interpretation that is merely ad hoc, post hoc, unfair, or surprising to regulated parties.
The Court found no sufficient policy or constitutional basis for discarding Auer. It saw little evidence that agencies deliberately draft vague regulations to gain later interpretive freedom, while agencies and regulated parties have substantial incentives to seek clarity. Nor does the doctrine improperly transfer judicial power to agencies, because courts retain responsibility for determining whether deference is available and for enforcing the regulation’s permissible bounds.
Stare decisis supplied an additional, powerful reason not to overrule the doctrine. Auer and Seminole Rock had been applied for decades by the Supreme Court and thousands of lower-court decisions, and abandoning them could unsettle many established regulatory interpretations. Congress remains free to alter the deference rule through legislation, but had not done so.