The Judiciary Act of 1789 gave powers to the judicial branch that went beyond what the Constitution outlined. Because of this, the act

The Judiciary Act of 1789 established the federal court system, but one of its provisions gave the Supreme Court authority beyond what the Constitution allowed. In Marbury v. Madison (1803), the Court declared that provision unconstitutional, establishing the principle of judicial review. Therefore, the act’s conflicting provision was ruled unconstitutional.

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