Administrative Law Legal Terms Glossary
Explore definitions, related concepts, and supporting case briefs.
Definitions
Chevron Deference
A two-step framework established in Chevron U.S.A., Inc. v. Natural Resources Defense Council (1984) for judicial review of agency interpretations of statutes they administer. At Step One, the court asks whether Congress has directly spoken to the precise question at issue; if the statute is clear, that is the end of the matter. At Step Two, if the statute is silent or ambiguous, the court asks whether the agency's interpretation is a permissible construction of the statute. Note that the Supreme Court's 2024 decision in Loper Bright Enterprises v. Raimondo significantly curtailed Chevron, holding that courts must exercise independent judgment in interpreting statutes rather than deferring to agency readings.
Skidmore Deference
A deferential standard from Skidmore v. Swift & Co. (1944) under which an agency's interpretation of a statute is given weight proportional to its power to persuade, based on the thoroughness of the agency's reasoning, the consistency of its position over time, the validity of its reasoning, and its expertise in the subject matter. Unlike Chevron deference, Skidmore does not compel courts to accept a reasonable agency interpretation; instead, courts exercise independent judgment while treating the agency view as a useful guidepost. After United States v. Mead Corp. (2001), Skidmore applies to informal agency actions that lack the force of law, such as opinion letters, policy statements, and interpretive guidance documents.
Auer Deference
Also known as Seminole Rock deference, this doctrine holds that courts should defer to an agency's interpretation of its own ambiguous regulation unless the interpretation is plainly erroneous or inconsistent with the regulation. Established in Bowles v. Seminole Rock (1945) and reaffirmed in Auer v. Robbins (1997), this standard was significantly narrowed by Kisor v. Wilkie (2019), which held that courts must first exhaust all traditional tools of interpretation before concluding a regulation is genuinely ambiguous. Even when deference applies after Kisor, the agency interpretation must reflect the agency's authoritative, considered position and must fall within the zone of ambiguity.
Arbitrary and Capricious Review
The default standard of judicial review under Section 706(2)(A) of the Administrative Procedure Act, requiring courts to set aside agency action that is 'arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law.' Under this standard, a court examines whether the agency considered the relevant factors, whether there was a clear error of judgment, and whether the agency articulated a satisfactory explanation with a rational connection between the facts found and the choice made (Motor Vehicle Manufacturers Association v. State Farm, 1983). Although deferential, this standard has real teeth: agencies must demonstrate reasoned decision-making based on the administrative record.
Notice-and-Comment Rulemaking
The most common form of agency rulemaking under Section 553 of the APA, also called informal rulemaking. The process requires three steps: (1) publication of a Notice of Proposed Rulemaking (NPRM) in the Federal Register describing the proposed rule's terms or substance; (2) an opportunity for interested persons to submit written comments, data, and arguments; and (3) publication of the final rule with a concise general statement of its basis and purpose. This procedure balances democratic participation with administrative efficiency, and rules promulgated through proper notice-and-comment carry the force of law. Failure to follow these procedures renders a rule procedurally invalid.
Formal Rulemaking
A rulemaking procedure required under Sections 556 and 557 of the APA when a statute mandates that rules be made 'on the record after opportunity for an agency hearing.' Formal rulemaking resembles a trial-like proceeding with oral testimony, cross-examination of witnesses, and a decision based on an exclusive record. Because of its extreme procedural costs, courts apply the trigger narrowly: in United States v. Florida East Coast Railway (1973), the Supreme Court held that only statutes using specific 'on the record' language require formal rulemaking. As a result, formal rulemaking is rarely used today, having been largely supplanted by informal notice-and-comment procedures.
Informal Rulemaking
The standard rulemaking procedure under Section 553 of the APA, synonymous with notice-and-comment rulemaking, used when a statute does not require formal, on-the-record proceedings. Informal rulemaking requires the agency to publish a notice of proposed rulemaking, accept public comments, and issue a final rule with a statement of basis and purpose. Although called 'informal,' courts have imposed additional procedural and substantive requirements through doctrines like hard look review, requiring agencies to respond to significant comments, disclose the data relied upon, and provide a reasoned explanation for their decisions. This is the workhorse of federal regulatory activity, producing thousands of binding rules each year.
Exhaustion of Remedies
A doctrine requiring that a party pursue all available administrative remedies before seeking judicial review of an agency action. The rationale is threefold: it allows the agency to correct its own errors, it ensures that courts receive the benefit of agency expertise and a fully developed record, and it respects the agency's autonomy within its delegated sphere. Under the APA, exhaustion is generally required only when explicitly mandated by statute (Darby v. Cisneros, 1993), though judicially created exhaustion requirements may apply in specific contexts. Exceptions exist for futility, irreparable harm, or where the agency clearly lacks authority.
Ripeness (Administrative Context)
A justiciability doctrine that prevents courts from reviewing agency action prematurely, before the issues are sufficiently developed and the parties face concrete harm. Under Abbott Laboratories v. Gardner (1967), courts apply a two-part test: (1) the fitness of the issues for judicial resolution, which considers whether the question is purely legal and whether the agency action is final; and (2) the hardship to the parties of withholding court consideration, examining whether delayed review would cause direct and immediate harm. Pre-enforcement review of regulations is permitted when the regulation requires immediate compliance and noncompliance carries serious penalties, as in Abbott Labs itself.
Standing (Administrative Context)
The constitutional and prudential requirements a plaintiff must satisfy to bring a challenge to agency action in federal court. Under Article III, the plaintiff must show (1) an injury in fact that is concrete, particularized, and actual or imminent; (2) that the injury is fairly traceable to the challenged agency action; and (3) that a favorable judicial decision would likely redress the injury. In the administrative law context, the APA adds a 'zone of interests' test: the plaintiff's interest must be arguably within the zone of interests protected or regulated by the statute the agency is charged with administering (Association of Data Processing Service Organizations v. Camp, 1970). This prevents parties with merely tangential grievances from challenging agency action.
Nondelegation Doctrine
A constitutional principle derived from Article I, Section 1 holding that Congress may not delegate its legislative power to administrative agencies without providing an 'intelligible principle' to guide the agency's exercise of delegated authority. The intelligible principle test, articulated in J.W. Hampton, Jr. & Co. v. United States (1928), requires that the statute lay down standards sufficient to constrain and direct agency discretion. The only two cases in which the Supreme Court struck down statutes on nondelegation grounds were A.L.A. Schechter Poultry Corp. v. United States (1935) and Panama Refining Co. v. Ryan (1935), both involving sweeping New Deal delegations. Though the doctrine has been largely dormant since then, recent concurrences by Justices Gorsuch and others signal potential reinvigoration.
Administrative Procedure Act (APA)
The foundational federal statute (5 U.S.C. Sections 551-706) enacted in 1946 that establishes the framework for federal agency rulemaking, adjudication, and judicial review. The APA defines key terms (agency, rule, order, adjudication), prescribes procedures for informal and formal rulemaking, sets requirements for formal adjudications, and establishes standards of judicial review including arbitrary and capricious review, substantial evidence review, and de novo review. Section 704 provides a general right to judicial review of final agency action for which there is no other adequate remedy, while Section 701 carves out exceptions for actions committed to agency discretion by law. The APA is the single most important statute in administrative law and the starting point for virtually every administrative law question.
Mead Doctrine
The threshold inquiry established in United States v. Mead Corp. (2001) that determines whether an agency interpretation qualifies for Chevron deference or only the lesser Skidmore deference. Under Mead, Chevron deference applies only when Congress has delegated authority to the agency generally to make rules carrying the force of law, and the agency interpretation claiming deference was promulgated in the exercise of that authority, such as through notice-and-comment rulemaking or formal adjudication. Agency interpretations issued through less formal means, such as opinion letters, guidance documents, or internal memoranda, typically receive only Skidmore's persuasive weight. Mead thus serves as a gatekeeper controlling access to the more deferential Chevron framework.
Major Questions Doctrine
A canon of statutory interpretation holding that courts should not defer to an agency's claim of broad regulatory authority over matters of vast economic and political significance unless Congress has clearly authorized the agency to act. Formally articulated in West Virginia v. EPA (2022), the doctrine requires 'clear congressional authorization' before an agency may assert power over issues of major national significance, especially when the agency claims authority in areas beyond its traditional expertise or in ways that transform its regulatory role. The doctrine operates as a substantive limit on Chevron deference: even if a statute is ambiguous, the agency loses deference on major questions absent a clear statement from Congress. Critics argue the doctrine lacks a principled definition of 'major' and shifts power from agencies to courts.
Agency Discretion
The latitude granted to administrative agencies in deciding how to implement and enforce the statutes they administer, including choices about rulemaking priorities, enforcement targets, and policy approaches. Under APA Section 701(a)(2), agency action 'committed to agency discretion by law' is generally unreviewable, though the Supreme Court in Citizens to Preserve Overton Park v. Volpe (1971) held this exception is very narrow and applies only where statutes are 'drawn in such broad terms that there is no law to apply.' Agency decisions not to enforce are presumptively unreviewable under Heckler v. Chaney (1985), reflecting the reality that enforcement involves complex balancing of priorities and resources. However, discretion is not unlimited; agencies must act within statutory boundaries and provide reasoned explanations for their choices.
Ultra Vires
A Latin term meaning 'beyond the powers,' used in administrative law to describe agency action that exceeds the scope of authority delegated by Congress. An ultra vires act is void ab initio because the agency simply lacked the legal power to take the action, regardless of whether the action might otherwise be reasonable or well-intentioned. Courts distinguish ultra vires challenges, which question whether the agency had any authority to act, from challenges to how the agency exercised concededly valid authority. Ultra vires claims are closely related to, but distinct from, Chevron Step One analysis: if Congress clearly did not grant the agency the claimed authority, the action is ultra vires and no deference applies.
Ratemaking
An administrative function in which an agency sets the prices that regulated entities, typically public utilities or common carriers, may charge for their services. Ratemaking is considered a quasi-legislative function and is subject to constitutional constraints: under the Due Process Clause, rates must be set high enough to allow the regulated entity a reasonable return on investment (Federal Power Commission v. Hope Natural Gas Co., 1944), but not so high as to exploit consumers. Agencies typically use either cost-of-service ratemaking (setting rates to cover costs plus a fair return) or incentive-based ratemaking (rewarding efficiency). Judicial review of ratemaking decisions applies the arbitrary and capricious standard, and courts examine whether the agency considered the relevant statutory factors.
Licensing
An administrative process by which an agency grants, denies, renews, or revokes permission for a regulated party to engage in an activity that would otherwise be prohibited. Under the APA, licensing proceedings are a form of adjudication, and when a statute requires a hearing on the record, the formal adjudication procedures of Sections 556 and 557 apply. The APA provides specific protections for licensees: Section 558(c) requires that an applicant be given notice of and opportunity to demonstrate compliance before a license can be denied, and an existing license cannot be revoked or suspended without the licensee first being given written notice and opportunity to achieve compliance. Licensing decisions must be based on the statutory criteria and are reviewable for abuse of discretion.
Adjudication
The agency process for formulating an order, which is the agency's final disposition in a matter other than rulemaking (APA Section 551(7)). Unlike rulemaking, which establishes general rules of future effect, adjudication resolves specific disputes or applies law to particular facts, much like a court proceeding. Formal adjudication under Sections 556 and 557 of the APA is triggered when a statute requires a decision 'on the record after opportunity for an agency hearing,' and includes procedural protections such as the right to present evidence, cross-examine witnesses, and receive a decision from an impartial administrative law judge. Informal adjudication covers everything else and is subject to minimal APA requirements, though due process protections from the Fifth Amendment may apply under Mathews v. Eldridge (1976).
Final Agency Action
A prerequisite for judicial review under APA Section 704, which provides that only 'final agency action for which there is no other adequate remedy in a court' is reviewable. Under Bennett v. Spear (1997), agency action is final when it satisfies two conditions: (1) the action must mark the consummation of the agency's decision-making process, not merely a tentative or interlocutory step; and (2) the action must be one by which rights or obligations have been determined, or from which legal consequences flow. Preliminary, procedural, or intermediate agency actions are generally not final and thus not reviewable. The finality requirement prevents courts from interfering with ongoing agency deliberations and ensures a concrete controversy exists.
Primary Jurisdiction
A prudential doctrine under which a court with jurisdiction over a case may stay or dismiss proceedings to allow an administrative agency with special expertise to first resolve the issues, particularly when the case involves technical or policy questions within the agency's specialized competence. Unlike exhaustion of remedies, which concerns whether a party has completed the administrative process before coming to court, primary jurisdiction applies when a case is properly before a court but involves issues that Congress intended to be first addressed by an agency. The doctrine promotes uniformity and consistency in regulatory schemes and ensures that courts benefit from agency expertise. Courts retain ultimate jurisdiction and may review the agency's resolution.
Political Accountability
A structural constitutional principle central to administrative law holding that those who exercise government power must be accountable to the electorate through the political process. In the administrative state, political accountability is maintained through the President's power to appoint and remove agency heads (under the Appointments Clause and the Take Care Clause), congressional oversight through appropriations, confirmation hearings, and legislative mandates, and judicial review of agency action. The Supreme Court in Bowsher v. Synar (1986) invalidated a statutory scheme that gave a congressional agent executive powers, holding that Congress cannot retain removal power over an officer performing executive functions. The tension between agency independence and political accountability animates debates over the constitutionality of independent agencies and removal protections.
Hard Look Review
A judicial gloss on the APA's arbitrary and capricious standard that requires courts to conduct a thorough, probing, and in-depth review of the agency's reasoning and decision-making process. Developed through cases like Citizens to Preserve Overton Park v. Volpe (1971) and Motor Vehicle Manufacturers Association v. State Farm (1983), hard look review demands that the agency examine the relevant data, articulate a satisfactory explanation for its action, demonstrate a rational connection between the facts found and the choice made, and address significant comments and alternatives. A court conducting hard look review does not substitute its judgment for the agency's but ensures the agency engaged in reasoned decision-making. The agency must show it considered important aspects of the problem and did not make a clear error of judgment.
Chenery Doctrine
A principle of judicial review established in SEC v. Chenery Corp. (1943 and 1947) with two key components. First, a reviewing court must judge the propriety of agency action solely on the grounds invoked by the agency at the time of its decision; courts may not sustain agency action on a rationale the agency did not itself articulate (Chenery I). Second, the Court held that an agency may develop policy through case-by-case adjudication as well as through rulemaking, and the choice between rulemaking and adjudication lies primarily within the agency's discretion (Chenery II). The first principle ensures that agencies, not courts, are the primary decision-makers, and if the agency's stated reasons are inadequate, the proper remedy is remand for the agency to reconsider, not judicial rationale-substitution.
Accardi Doctrine
A principle established in United States ex rel. Accardi v. Shaughnessy (1954) holding that an agency must follow its own regulations, and that failure to do so renders the resulting action invalid even if the regulations were not required by statute. The doctrine reflects the due process principle that individuals rely on published agency procedures and are entitled to the protections those procedures provide. When an agency promulgates binding regulations, it creates legitimate expectations that affected parties will receive the procedural protections described therein. The doctrine applies even where the regulation provides more process than the Constitution or statute requires; the agency is bound by its self-imposed procedural requirements until it properly amends or rescinds them through appropriate rulemaking procedures.