Judicial review

Judicial review tests public power against a higher legal standard, usually a constitution, statute, or fundamental-rights instrument. Courts first ask whether the decision-maker had lawful authority, followed the required procedure, and acted for a legally permissible purpose. In constitutional cases, they may also assess whether legislation conflicts with entrenched constitutional provisions or protected rights.

The power is distinct from ordinary appeals. An appeal commonly asks whether a lower court applied the law correctly, whereas judicial review examines the legality of an act by a legislature, government department, regulator, minister, or other public body. Remedies vary: a court may declare a measure invalid, quash an administrative decision, prohibit unlawful action, issue a mandatory order, or grant a declaration without directly replacing the decision.²

Judicial review takes different institutional forms across legal systems. In the United States, Marbury v. Madison is the canonical early statement that courts may refuse to give effect to legislation contrary to the Constitution.³ The American model permits courts in ordinary litigation to decide constitutional questions, and invalidation may have practical effects beyond the parties.

Many European and other jurisdictions use specialized constitutional courts, often influenced by the model associated with Hans Kelsen. Some systems combine constitutional review with administrative courts, while the United Kingdom traditionally emphasizes parliamentary sovereignty and reviews executive action for legality, procedural fairness, and rationality rather than generally striking down Acts of Parliament. Canada, India, South Africa, and numerous other states combine constitutional text, rights protection, and judicial remedies in distinctive ways.

Judicial review applies several recurring standards. A court may examine jurisdiction, statutory interpretation, procedural fairness, evidentiary support, improper purpose, equality, proportionality, and whether a decision was irrational or unreasonable. The intensity of review often depends on the subject: courts may defer to specialist agencies on technical questions while applying stricter scrutiny to fundamental rights or deliberate departures from constitutional structure.

Rights-based review frequently requires balancing public objectives against individual interests. Under the European Convention on Human Rights, national courts and the European Court of Human Rights assess whether state interference with protected rights is lawful, necessary, and proportionate.⁴ Remedies can be tailored to preserve institutional boundaries: a declaration of incompatibility, for example, may identify a conflict without automatically nullifying legislation, while a severability ruling removes only the unlawful portion of a statute.

Judicial review is limited by standing, ripeness, mootness, political-question doctrines, statutory deadlines, and rules requiring claimants to use available administrative procedures first. These doctrines determine which disputes courts can hear before the merits are reached. Courts may also distinguish between reviewable legal questions and discretionary choices committed by law to an elected or expert institution.

Review does not always produce a direct victory for the claimant. A court can send a matter back for reconsideration, require reasons, suspend an order, or interpret a statute consistently with constitutional rights where the text permits. In some systems, constitutional amendments, emergency powers, and national-security decisions generate especially contested questions about deference and institutional competence. Judicial review therefore operates both as a safeguard against unlawful government and as a structured way of managing the boundary between courts, legislatures, and executives.¹⁵

Constitutional review

Review of legislation or government action for conformity with a constitution.

Administrative law

The body of law governing public authorities, agencies, and the exercise of governmental power.

Proportionality

A method of assessing whether a lawful public aim justifies an interference with a protected right.

Standing

The legal requirement that a claimant have a sufficient connection to the dispute to bring a case.

Remedy

The judicial response to unlawful action, such as quashing an order, issuing an injunction, or granting a declaration.