Whether Chevron deference applies when an agency interprets an ambiguous statutory provision bearing on the scope of its own regulatory authority.
Holding
Yes. Chevron applies to an agency’s permissible interpretation of an ambiguity concerning the scope of its authority, just as it applies to other ambiguities in a statute the agency administers.
Reasoning
Chevron requires a court first to use ordinary tools of statutory interpretation to determine whether Congress directly addressed the precise question. If Congress spoke clearly, both court and agency must follow that command. If the statute remains ambiguous, the court asks whether the agency adopted a permissible construction. The doctrine rests on the presumption that Congress ordinarily intends an administering agency, rather than a court, to resolve ambiguities within the bounds of a reasonable interpretation.
The Court rejected a separate category of nondeferential “jurisdictional” questions. For agencies, an allegedly incorrect application of statutory authority and an allegedly unauthorized assertion of authority present the same basic question: whether the agency has gone beyond what Congress allowed. Unlike a court’s subject-matter jurisdiction, an agency’s authority to act cannot meaningfully be separated from the statutory limits governing how it acts.
The Court illustrated the point with hypothetical statutes regulating common carriers. Whether a statute directly grants an agency “jurisdiction” to prohibit unreasonable conditions or instead prohibits those conditions and gives the agency broad rulemaking power, the substantive question is the same: whether the agency may regulate a particular actor or practice. The availability of Chevron cannot sensibly turn on which drafting form Congress chose.
Supreme Court precedent consistently applies Chevron to provisions that define or limit agency authority, including interpretations involving the FCC’s authority over pole attachments, the CFTC’s authority over state-law counterclaims, and the Army Corps’ authority over adjacent wetlands. Even in cases involving economically and politically significant agency assertions of power, the Court has used the Chevron framework rather than creating a jurisdictional exception.
The Court did not hold that an agency may define its power without constraint. Courts must rigorously enforce clear statutory boundaries at Chevron step one. But when Congress has left an ambiguous boundary and the agency gives it a permissible reading, a court need not first classify the issue as jurisdictional; the permissible agency construction controls.