Since the War Powers Resolution was passed after involvement during Vietnam in 1973, the U.S. has been involved in several military actions of varying scales without any real effect from the resolution.ar Powers Resolution. From Wikipedia, the free encyclopedia. The War Powers Resolution (also known as the War Powers Resolution of 1973) (50 U.S.C. 1541–1548) is a federal law intended to check the president 's power to commit the United States to an armed conflict without the consent of the U.S. Congress.