<P> December 11, 1941, the United States Congress declared war upon Germany (Pub. L. 77--331, Sess. 1, ch. 564, 55 Stat. 796), hours after Germany declared war on the United States after the Japanese attack on Pearl Harbor . The vote was 88--0 in the Senate and 393--0 in the House . </P> <P> At the First Session Begun and held at the City of Washington, on Friday, the third day of January, 1941 . </P> <P> JOINT RESOLUTION Declaring That a State of War Exists Between The Government of Germany and the Government and the People of the United States and Making Provisions To Prosecute The Same </P>

When did the usa declare war on germany