Pearl Harbor: 12 Facts and Myths About the Japanese Attack on the U.S. Pacific Fleet

7. Fact: The Attack Prompted U.S. Entry into WWII

The attack on Pearl Harbor on December 7, 1941, directly led to the United States’ entry into World War II. The following day, President Franklin D. Roosevelt addressed Congress, leading to a unanimous declaration of war against Japan. This pivotal moment is documented in the Congressional Record (congress.gov).