Conversation so far:
when did the us go to war with germany
On December 11, 1941, the United States Congress declared war upon Germany.
why was war declared by the united states upon germany in 1941
The war declaration was hours after Germany declared war on the United States after the attack on Pearl Harbor by the Empire of Japan.

Question: how was the war voted
Self-contained rewrite: how was the war declaration by the united states against germany voted