In article 1, section 8 of the Constitution, it reads that the Congress shall have power:
- To declare War
- To raise and support Armies, but no Appropriation of Money to that Use shall be for a longer Term than two Years
To read the entire Constitution, click on The Constitution of the United States: A Transcription.
According to the United States Department of Justice in September 2001, in the history of the U.S., on 125 occasions, the President initiated military action without prior express authorization from Congress. To read the entire memorandum opinion, click on THE PRESIDENT’S CONSTITUTIONAL AUTHORITY TO CONDUCT MILITARY OPERATIONS AGAINST TERRORISTS AND NATIONS SUPPORTING THEM.