History
Judicial Review
Quick fact
The power of judicial review is not explicitly written into the U.S. Constitution; it was established by the Supreme Court in 1803 through the case Marbury v. Madison.
Why this is interesting
You've likely heard that courts can strike down laws. But why should a small group of judges have the power to override laws passed by elected representatives?
Read the full explanation
Understanding Judicial Review
Imagine a game where the rules say that no rule can break the main rulebook. If the legislature passes a law that contradicts the constitution, who decides? Judicial review gives that role to the courts. When a case arises, a court examines the law in question against the constitution. If the law violates the constitution, the court declares it void. This process didn't always exist; it was created in the United States by Chief Justice John Marshall. In Marbury v. Madison, the Supreme Court claimed the authority to interpret the constitution and refuse to enforce laws that conflict with it. Since then, many democracies have adopted similar practices. The power is not unlimited—courts usually wait for an actual dispute (a case or controversy) before reviewing a law.
A deeper explanation
Judicial review works because of the principle of constitutional supremacy: the constitution is the highest law. Under this principle, any law that violates the constitution is not really a law. Courts, as neutral arbiters, are best positioned to interpret the constitution's meaning. The mechanism relies on the idea that judges are independent and not subject to political pressure—they can make unpopular decisions based on legal reasoning. Why does this matter? Without judicial review, a legislature could pass laws infringing on fundamental rights (free speech, equal protection) without any check. It also maintains the separation of powers by preventing one branch from exceeding its authority. However, it raises a counter-majoritarian difficulty: unelected judges can overturn democratically enacted laws, which fuels debates about judicial restraint versus activism. Understanding judicial review is essential to grasping modern constitutional democracies and the balance between majority rule and individual rights.