Marbury v. Madison established judicial review, giving the Supreme Court the power to declare laws unconstitutional.
Marbury v. Madison was a landmark 1803 Supreme Court case that established judicial review, granting the judiciary branch the authority to declare a law unconstitutional. In this case, the court ruled that the Judiciary Act of 1789 violated the Constitution, setting a precedent for the power of the Supreme Court to interpret laws and deem them unconstitutional.
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