In Marbury v. Madison, the Supreme Court first stated the principle that - A. only the courts may regulate interstate commerce
B. the president may veto federal legislation
C. the courts may declare a federal law unconstitutional
D. only the president may issue an executive order

Explanation:

The U.S. Supreme Court case Marbury v. Madison (1803) established the principle of judicial review—the power of the federal courts to declare legislative and executive acts unconstitutional. The unanimous opinion was written by Chief Justice John Marshall.

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