Legal Sidebari

Judicial Review Under the Administrative
Procedure Act (APA)
December 8, 2020
Federal agencies administer a wide range of areas by adopting rules, adjudicating disputes and claims,
and providing guidance on matters within their purview. Given the potential impact of these agency
actions on individual rights, the Supreme Court has recognized a “strong presumption that Congress
intends judicial review of agency action”; this presumption is embodied in the Administrative Procedure
Act (APA). For agency actions not governed by another statute, the APA defines the federal courts’ scope
of review—how courts review agency actions, including the legal standards used to review those actions.
This Sidebar provides a brief summary of the APA’s judicial review requirements before exploring the
scope of that review. It does not address other issues affecting judicial review of agency actions, such as
subject-matter jurisdiction or the case-or-controversy requirement. For a discussion of these topics, see
CRS Report R44699, An Introduction to Judicial Review of Federal Agency Action, by Jared P. Cole.
Seeking Judicial Review Under the APA
The APA, originally enacted in 1946, establishes the procedures that federal agencies use for rulemakings
and adjudications. The Act also sets out procedures for how courts may review those agency actions.
These judicial review procedures are default rules that apply unless another law supersedes them.
To obtain review under the APA, a person—an individual, business, or other organization—seeking
review must have suffered a legal wrong or been otherwise harmed by an agency action. The APA defines
agency as “each authority of the Government of the United States” minus several exceptions, including
Congress, federal civilian and military courts, and the D.C. and territorial governments. In addition, the
Supreme Court has held that the President is exempt from the APA’s requirements. Agency actions
include both rulemakings and adjudications—such as the award or denial of a license, sanction, or other
form of relief—as well as an agency’s failure to act.
Even when a case satisfies these criteria, the APA limits judicial review in three additional ways. First, a
court may only review an agency action if (1) there is a separate statute authorizing review of the action
or (2) the action is final and “there is no other adequate remedy in a court” with respect to that action.
Second, courts may not review challenges to an agency’s action if another statute precludes judicial
review of the action. This preclusion could apply to an entire class of decisions, such as the pre-1989
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prohibition on judicial review of Veterans’ Administration benefits determinations or to review sought by
certain classes of persons. Third, the APA prohibits review of actions “committed to agency discretion by
law.” This exception is “quite narrow[]” and the Supreme Court has confined it to “those rare
circumstances where the relevant statute ‘is drawn so that a court would have no meaningful standard
against which to judge the agency’s exercise of discretion.’” (For a more detailed discussion of this
prohibition, see CRS Legal Sidebar LSB10536, Judicial Review of Actions Legally Committed to an
Agency’s Discretion, by Daniel J. Sheffner.)
Scope of Judicial Review Under the APA
For cases that fall within its ambit, the APA defines the scope of courts’ review of agency actions.
Specifically, the APA authorizes federal courts to (1) decide all relevant questions of law; (2) interpret
constitutional and statutory provisions; and (3) determine the meaning or applicability of the terms of an
agency action. By default, the U.S. district courts have jurisdiction to hear APA challenges, but Congress
has vested review in other courts, such as the federal courts of appeals, in specific circumstances. The
APA authorizes courts reviewing agency actions to
1. compel agency action unlawfully withheld or unreasonably delayed; and
2. hold unlawful and set aside agency action, findings, and conclusions found to be—
a. arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law;
b. contrary to constitutional right, power, privilege, or immunity;
c. in excess of statutory jurisdiction, authority, limitations, or short of statutory right;
d. without observance of procedure required by law;
e. unsupported by substantial evidence in a case subject to Sections 556 and 557 of Title 5 or
otherwise reviewed on the record of an agency hearing provided by statute; and
f. unwarranted by the facts to the extent that the facts are subject to trial de novo by the
reviewing court.
In making these determinations, the court must review the agency’s administrative record. In addition, the
court must take “due account” of the rule of prejudicial error.
Compelling Agency Action
A person can challenge an agency for withholding or unreasonably delaying a required action. For this
type of claim to proceed, a challenger must assert “that an agency failed to take a discrete action that it is
required to take.” If a reviewing court determines the agency unlawfully withheld or unreasonably
delayed action, it can compel the agency to act. The court cannot, however, tell the agency how to act. For
example, if a statute requires an agency to issue regulations by a certain date, a court could compel an
agency to issue the required regulations but could not issue a “decree setting forth the content of those
regulations.”
Reviewing Agency Action
When examining an agency’s actions under the APA, a court will generally consider whether (1) the
agency action is lawful; (2) the agency adequately supported its factual findings and discretionary
decisions; and (3) the agency complied with procedural requirements. Each of these inquiries requires the
court to apply one or more standards of review—the lenses through which the court examines the
agency’s action.

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Lawfulness
The APA requires a reviewing court to consider whether an agency action complies with applicable laws.
This type of review includes whether an agency action is “contrary to constitutional right, power,
privilege, or immunity.” As an example, a court might consider whether a rule prohibiting Social Security
Administration administrative law judges from receiving compensation for outside teaching, speaking, or
writing violates these judges’ First Amendment rights to free expression. Likewise, the court must
consider whether an agency action exceeds the agency’s statutory jurisdiction or authority or if it violates
a statutory right. For example, a court may be asked to decide whether an agency official has statutory
authority to issue a decision. Finally, the reviewing court must decide whether the agency action is
“otherwise not in accordance with law,” including whether it complies with applicable agency
regulations.
Courts generally decide questions of law, including the meaning of statutes or regulations, de novo—that
is, without deference to a lower court or agency decision. But the Supreme Court has created several
deference doctrines that instruct courts to defer to certain agency interpretations of ambiguous statutes
and regulations:
 Chevron deference (named for Chevron U.S.A. Inc. v. Natural Resources Defense
Council, 467 U.S. 837 (1984)) generally applies to an agency’s legally binding,
reasonable interpretation of a statute it administers;
 Auer or Seminole Rock deference (named for Auer v. Robbins, 519 U.S. 452 (1997), and
Bowles v. Seminole Rock & Sand Co., 325 U.S. 410 (1945)) generally applies to an
agency’s reasonable interpretation of its own regulations; and
 Skidmore deference (named for Skidmore v. Swift & Co., 323 U.S. 134 (1944)) applies to
an agency’s informal interpretation of a statute, which has the “power to persuade” a
reviewing court.
For more information on these doctrines, see CRS Report R44954, Chevron Deference: A Primer, by
Valerie C. Brannon and Jared P. Cole; and CRS Legal Sidebar LSB10322, Kisor v. Wilkie: Supreme Court
Upholds the Auer Doctrine but Clarifies Its Limitations, by Daniel J. Sheffner.
Factual Findings and Discretionary Decisions
In addition to whether an agency action adheres to applicable laws, a reviewing court may also examine
the agency’s factual findings and discretionary decisions. The types of discretionary decisions courts
review under the APA are distinct from actions “committed to agency discretion by law,” which, as
discussed, are not reviewable. The Supreme Court “has noted the ‘tension’” between the APA’s mandate
that courts review agency actions for abuses of discretion and its prohibition against review of actions
committed to agency discretion. Recognizing that courts “could never determine that an agency abused its
discretion if all matters committed to agency discretion were unreviewable,” the Court has limited the
committed-to-agency-discretion exception to those situations where there is “no meaningful standard
against which to judge the agency’s exercise of discretion.”
Courts generally cannot review an agency’s factual findings and discretionary decisions de novo—that is,
a court cannot substitute its own judgment for the agency’s. Instead, a court will generally consider
whether the agency determination was “arbitrary, capricious, [or] an abuse of discretion.” Under this
“deferential” standard, courts examine whether the agency “examined ‘the relevant data’ and articulated
‘a satisfactory explanation’” for its decision. A reviewing court is “limited to ‘the grounds that the agency
invoked when it took the action’” and whether the agency acted “within the bounds of reasoned
decisionmaking.”

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The APA provides two exceptions to this general standard of review. First, when a court reviews an
agency rulemaking or adjudication made on the record after a hearing (i.e., formal rulemakings and
adjudications, which employ trial-like evidentiary proceedings), the court must consider whether the
agency’s determinations are “unsupported by substantial evidence.” Under this standard, the court must
assess whether there is substantial evidence—that is, “more than a scintilla” but “less than a
preponderance”—supporting the agency’s findings. Second, courts may, in two limited cases, review
factual determinations de novo: (1) “when the action is adjudicatory in nature and the agency factfinding
procedures are inadequate”; and (2) “when issues that were not before the agency are raised in a
proceeding to enforce nonadjudicatory agency action.” In these situations, reviewing courts must
determine whether an agency action is “unwarranted by the facts.”
Procedural Requirements
A reviewing court should consider whether an agency failed to observe the procedures required by law,
including the APA and the agency’s own regulations. This review could include whether an agency
complied with the APA’s notice-and-comment provisions before issuing a final rule. Likewise, a
reviewing court could be asked to decide whether a hearing officer followed an agency’s adjudicatory
procedures, such as whether to issue subpoenas. Courts generally review de novo whether an agency
complied with its procedural requirements.
Review on the Record
In reviewing an agency’s actions, courts must “review the whole record or those parts cited by a party.”
The Supreme Court has interpreted this provision to mean that, in general, “the focal point for judicial
review should be the administrative record already in existence, not some new record made initially in the
reviewing court.” Although judicial review “is usually limited to the administrative record,” there are
several exceptions, such as “‘when it appears the agency has relied on documents or materials not
included in the record’” or when necessary to explain technical terms.
Prejudicial Error
The APA mandates that a reviewing court must take due account of the rule of prejudicial error. Under
this rule, when a reviewing court determines that an agency erred, the court must ask whether the error
prejudiced—or harmed—the person challenging the agency’s action. “If the agency’s mistake did not
affect the outcome, . . . it would be senseless to vacate and remand for reconsideration.” But the rule
“requires only a possibility that the error would have resulted in some change” in the agency’s action.
The Supreme Court recently applied this doctrine in Little Sisters of the Poor Saints Peter & Paul Home
v. Pennsylvania. In that case, the Court considered whether the Departments of Health and Human
Services, Labor, and Treasury complied with the APA when they created exceptions to the contraceptive
mandate rules issued under the Patient Protection and Affordable Care Act of 2010. The Court discerned
no prejudicial error in the creation of the exceptions, holding that even if the Departments did not comply
fully with APA notice-and-comment procedure, the challengers were not harmed because they in fact
received notice and had a chance to submit comments.
Considerations for Congress
Congress has a great degree of authority over whether and how courts review agency actions. The lower
federal courts possess limited jurisdiction and can only act when authorized by the Constitution or statute.
Because the APA provides the default rules for how and when courts may review agency actions,

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Congress can amend the APA to change these conditions. In addition, Congress can create statutory
exceptions to the APA’s default rules for particular agencies or types of agency action.
Members introduced several bills in the 116th Congress that would modify the scope of judicial review
under the APA. For example, the Separation of Powers Restoration Act (SOPRA), H.R. 1927 and S. 909,
would require courts to examine “de novo relevant questions of law, including the interpretation of
constitutional and statutory provisions, and rules made by agencies,” likely limiting or eliminating the
Chevron and Auer doctrines discussed above. Likewise, the Regulatory Accountability Act, S. 3208,
would require courts to consider additional factors, such as the thoroughness and validity of an agency’s
reasoning, when determining how much weight to give an agency’s interpretation of its own rule. The
likely effect of these bills would be to limit or eliminate Auer deference and, in the case of SOPRA,
Chevron deference. For a more detailed discussion of these bills and other proposed legislation, see CRS
Legal Sidebar LSB10523, Administrative Law Reform Legislation in the 116th Congress, by Daniel J.
Sheffner.

Author Information

Jonathan M. Gaffney

Legislative Attorney




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