What was significant about the court case Marbury v. Madison?

In Marbury v. Madison (1803) the Supreme Court announced for the first time the principle that a court may declare an act of Congress void if it is inconsistent with the Constitution. Although the immediate effect of the decision was to deny power to the Court, its long-run effect has been to increase the Court’s power by establishing the rule that ‘it is emphatically the province and duty of the judicial department to say what the law is.’ Since Marbury v. Madison the Supreme Court has been the final arbiter of the constitutionality of congressional legislation.

Explanation:

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