What did Marbury v Madison establish?

Marbury v. Madison, 5 US 137 (1803) is often credited with establishing the right of judicial review, which increased the Court's power and made it more equal to the other branches of government. Judicial review allows the Supreme Court to determine whether legislation is unconstitutional and to overturn those laws.

For more in-depth information on Marbury v. Madison (1803), see Related Links, below.