The (also known as the War Powers Resolution of 1973 or the War Powers Act) a federal law intended to check the U.S. president's power to commit the United States to an armed conflict without the consent of the U.S. Congress.

The Imperial Decree of declaration of war against foreign powers was a simultaneous declaration of war by the Qing dynasty on June 21, 1900 against eleven foreign powers which held varying degrees of influence in China: Russia, the United States, the United Kingdom, Japan, France, Germany, Italy, Spain, Austria-Hungary, Belgium, and the Netherlands.

The War Powers Act of 1941, also known as the First War Powers Act, was an American emergency law that increased federal power during World War II.