According to the Constitution of the United States, Article One Section 8, The Congress shall have the power .... " To declare War, grant Letters of Marque and Reprisal, and make Rules concerning Captures on Land and Water;"
When the United States declares war the Declaration is normally requested by the President. However, the declaration itself must be made by a Joint Resolution of the House of Representatives and the...
By the US Consititution, only Congress may actually declare war; however, by the War powers Act, the President may engage the military in a war zone and has all the power of Congress to conduct war...
Pursuant to Article I of the United States Constitution only Congress may declare war. As a matter of practice, however, Congress no longer declares war but instead issues war powers resolutions...