The power to say whether a government action is actually lawful — a doctrine the Constitution never explicitly names.
Judicial review is the power of courts to decide whether a statute, executive action, agency rule, or official decision conflicts with the Constitution or another controlling law. The phrase itself doesn’t appear anywhere in the Constitution’s text — the doctrine became central only after one specific, foundational case.
Courts answer legal questions through cases, records, arguments, and written decisions.
Guide to Government
Where the Power Actually Comes From
The Constitution grants “the judicial power” — nothing more specific
The Constitution gives federal courts “the judicial power,” but never uses the phrase “judicial review” or spells out the authority to strike down a law as unconstitutional. That authority became firmly established through Marbury v. Madison in 1803 and the body of case law that followed — a real, foundational example of a doctrine built by the Court’s own reasoning on top of sparse constitutional text, not something written out explicitly from the start.
What Actually Limits This Power
A real case, not an opinion
Courts don’t issue general advisory opinions — judicial review only happens through an actual case with real parties and a genuine dispute.
Standing and a live controversy
A case needs a party with real standing to sue, and a controversy that’s still live, not already resolved or purely hypothetical.
Jurisdiction and a remedy
The court needs actual jurisdiction over the dispute, and a remedy it’s genuinely capable of granting.
Mostly discretionary at the top
Supreme Court review of most cases isn’t automatic — the Court chooses which cases to hear in the large majority of its docket.
Courts can’t just review any political disagreement that comes their way
A common misconception is that judicial review functions as a general power to referee any political dispute. Courts require a real case with genuine standing, a live controversy, and a remedy they’re actually capable of granting — disagreeing with a policy isn’t, by itself, enough to get judicial review. This is exactly why courts sometimes decline to rule on genuinely contested political questions, even ones with obvious public importance, if the case doesn’t meet these real procedural requirements.
