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The Supreme Court declared an act of Congress unconstitutional in Marbury v. Mad
Featured Event 1803 Event

February 24

Marbury v. Madison: Judicial Review Established

The Supreme Court declared an act of Congress unconstitutional in Marbury v. Madison, instantly granting the judiciary the power to nullify laws that violate the Constitution. This single ruling transformed the courts from a passive branch into a co-equal force capable of checking legislative and executive overreach.

February 24, 1803

223 years ago

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