Judicial review is how federal courts decide whether a law, executive action, or agency decision violates the Constitution or exceeds legal authority, and it works through a defined sequence: a qualifying plaintiff files a challenge, the court applies a standard tied to the type of action and rights at stake, and the ruling either upholds the action, strikes it down, or sends it back for another try. Understanding how judicial review works means understanding each of those steps, plus the doctrines that keep some disputes out of court entirely and a 2024 Supreme Court decision that changed the balance of power between judges and federal agencies.
Where the Power Comes From
Article III of the Constitution vests the judicial power of the United States in “one supreme Court, and in such inferior Courts as the Congress may from time to time ordain and establish,” and extends that power to all cases arising under the Constitution, federal law, and treaties.1Congress.gov. U.S. Constitution – Article III2Legal Information Institute. U.S. Constitution Article III The phrase “judicial review” appears nowhere in the text. The authority to declare a statute unconstitutional was claimed by the Supreme Court itself in Marbury v. Madison (1803), where Chief Justice John Marshall reasoned that any law “repugnant to the Constitution is void” and that courts cannot enforce it.3National Archives. Marbury v. Madison (1803) That logic still governs every constitutional challenge in federal court.
What Courts Can Review
Judicial review reaches all three sources of federal power. Congressional statutes can be challenged for violating constitutional protections or exceeding Congress’s enumerated powers. Executive orders and presidential proclamations face review when someone argues the President bypassed Congress or infringed on protected rights. Federal agency regulations and enforcement decisions generate the largest volume of cases.
The Administrative Procedure Act gives any person who suffers a legal wrong from agency action the right to challenge it in court.4Office of the Law Revision Counsel. 5 USC 702 – Right of Review That covers environmental regulations, immigration decisions, benefit denials, and much more. The APA also waives federal sovereign immunity for lawsuits seeking non-monetary relief, so you don’t need special permission from Congress to ask a court to block or overturn an unlawful regulation. Suits seeking money from the federal government require a different statutory waiver, and the rules tighten. State governments carry their own layer of immunity under the Eleventh Amendment, and a state’s consent to be sued in its own courts does not automatically extend to federal court.5Congress.gov. Constitution Annotated – Waiver of State Sovereign Immunity
Who Can Bring a Challenge
Before a court will hear a case, the plaintiff must show standing. The Supreme Court’s 1992 decision in Lujan v. Defenders of Wildlife set three requirements.6Justia. Lujan v. Defenders of Wildlife, 504 U.S. 555 (1992) The plaintiff must have suffered a concrete, particularized injury that is actual or imminent. A general grievance that the government is behaving badly won’t do. The injury must be traceable to the challenged action, not to something an unrelated third party did. And a favorable court decision must be able to fix or at least partially remedy the harm.7Congress.gov. Constitution Annotated – Standing Requirements
These requirements come from the Constitution’s limitation of federal judicial power to actual “cases” and “controversies.” They keep courts out of advisory opinions and hypothetical disputes.
Timing matters too. Ripeness prevents courts from deciding disputes that haven’t developed enough to require intervention. If a law has been passed but nobody has yet been affected, the challenge may be premature. Mootness is the opposite problem: the dispute has already resolved, or the parties no longer have anything at stake. A case attacking a regulation the agency already repealed is typically moot.
What Courts Refuse to Decide
Some disputes never reach the merits because the Constitution assigns them to the elected branches. Under the political question doctrine, laid out in Baker v. Carr (1962), federal courts decline cases where the text commits the issue to another branch, no workable legal standards exist, or a ruling would require making a policy judgment reserved for elected officials.8Congress.gov. Constitution Annotated – Overview of Political Question Doctrine Foreign affairs and military decisions are the classic examples: recognizing foreign governments, terminating treaties, and overseeing military training and equipment sit outside judicial competence.9Congress.gov. Constitution Annotated – Foreign Affairs as a Political Question Courts still analyze each case individually; a lawsuit that merely touches on foreign relations is not automatically off-limits.
The Standards Courts Apply
The outcome of a judicial review case turns heavily on which standard governs. Tougher standards make it harder for the government to defend an action; more deferential ones make it harder for the challenger to win. The standard depends on the type of action and what rights are at stake.
Constitutional Challenges
When a court evaluates whether a law violates the Constitution, it applies one of three tiers of scrutiny.
Rational basis is the most deferential. The government need show only that the law is rationally related to any conceivable legitimate purpose. Most economic regulation and general social legislation is evaluated under this standard, and the government almost always wins.
Intermediate scrutiny raises the bar. Used primarily in cases involving sex- or gender-based classifications, it requires the government to prove the law is substantially related to an important government objective. The actual purpose matters, not just a hypothetical one.
Strict scrutiny is the most demanding. Courts apply it when a law infringes on fundamental rights or discriminates against a historically disadvantaged group. The government must show the law is necessary to achieve a compelling purpose. Few laws survive it, which is why so many legal challenges focus on convincing the court to apply this standard rather than a lower one.
Challenges to Agency Action
For federal agency decisions, courts apply the standards in the APA. The most common is the “arbitrary and capricious” test. A court will strike down agency action that lacks a rational explanation, ignores important aspects of the problem, or contradicts the evidence before the agency.10Office of the Law Revision Counsel. 5 USC 706 – Scope of Review Courts also set aside actions that exceed statutory authority, violate constitutional rights, or skip required procedures.
For agency decisions made after formal hearings, the substantial evidence standard applies. Factual findings must be supported by enough evidence that a reasonable person could reach the same conclusion on the record. Courts examine the entire record but do not re-weigh evidence or substitute their own judgment on factual questions.
The End of Chevron Deference
For forty years, courts followed Chevron deference: when a federal statute was ambiguous, judges deferred to the agency’s reasonable interpretation instead of deciding the meaning independently. That era ended on June 28, 2024, when the Supreme Court overruled Chevron in Loper Bright Enterprises v. Raimondo.11Supreme Court of the United States. Loper Bright Enterprises v. Raimondo (2024) The Court held that the APA “requires courts to exercise their independent judgment in deciding whether an agency has acted within its statutory authority” and that “courts may not defer to an agency interpretation of the law simply because a statute is ambiguous.” The decision rests on the APA text directing reviewing courts to “decide all relevant questions of law” and “interpret constitutional and statutory provisions.”10Office of the Law Revision Counsel. 5 USC 706 – Scope of Review
The practical effect is real. Before Loper Bright, an agency’s reading of its own governing statute started with a thumb on the scale. Now the judge reads the statute fresh. Courts can still consider agency expertise and reasoning, but ambiguity no longer means the government wins.
How a Case Moves Through Court
A challenge starts with a petition for review, or, when seeking Supreme Court review of a lower court decision, a petition for a writ of certiorari. At the Supreme Court, the petition must be filed within 90 days after entry of the lower court’s judgment.12Legal Information Institute. Supreme Court Rules Rule 13 – Review on Certiorari: Time for Petitioning For administrative agency decisions, the governing statute usually specifies a shorter window; 30 or 60 days is typical. Missing the deadline forfeits the right to review entirely. This is one of the most unforgiving traps in federal practice.
Once a case is accepted, the parties assemble the administrative or lower court record containing all evidence and documents from the original proceeding. Attorneys file briefs. The challenger explains why the action was unlawful; the government defends it. In cases where the court grants oral argument, lawyers appear in person to answer questions and sharpen their positions.
Emergency Relief
Filing a challenge does not automatically pause the government action you’re contesting. If a regulation takes effect next week and you expect serious harm, you must ask the court for emergency relief through a temporary restraining order or a preliminary injunction. Courts evaluate these requests under a four-factor test from Winter v. Natural Resources Defense Council (2008): likelihood of success on the merits, likelihood of irreparable harm without the injunction, a balance of hardships tipping in the movant’s favor, and service to the public interest. Failing any one factor can sink the request. Financial losses alone often fall short, because money damages can theoretically make you whole later.
How Cases End
A court that has finished reviewing a case issues one of a few types of rulings. If the challenged action is lawful, the court affirms it and leaves it in place. If the court finds a legal error or constitutional violation, it may vacate the decision, which strips it of legal force entirely. Vacating a federal regulation means the regulation no longer applies to anyone, not just the parties in the case.
Courts frequently remand cases back to the agency or lower court for further proceedings. A remand means the original decision-maker gets another chance but must follow the legal guidance the reviewing court has provided. Often a court both vacates and remands: the flawed action is wiped out, and the agency can try again using the correct framework. Most regulatory challenges end this way, and it can take years before the matter is fully resolved.
Recovering Attorney Fees After Winning
Winning a judicial review case against the federal government does not automatically get your legal costs back. The Equal Access to Justice Act creates a limited right to recover attorney fees when the government’s position was not “substantially justified,” meaning the government lacked a reasonable basis in law and fact.13Office of the Law Revision Counsel. 28 USC 2412 – Costs and Fees The government bears the burden of proving its position was justified.
Eligibility is capped by net worth. Individuals must have a net worth of $2 million or less at the time of filing. Businesses, organizations, and units of local government must have a net worth of $7 million or less and no more than 500 employees.13Office of the Law Revision Counsel. 28 USC 2412 – Costs and Fees Fees are capped at $125 per hour unless the court finds that cost of living or the specialized nature of the case justifies a higher rate. Tax cases and tort claims are excluded. The fee application must be filed within 30 days of the final judgment, another hard deadline that catches people off guard.