"Day of Infamy" SpeechAddress to a joint session of the U.S. Congress delivered by President Franklin D. Roosevelt on December 8, 1941, the day after Japan's surprise naval air attack on the U.S. naval base at Pearl Harbor, Hawaii. Calling December 7 "a date which will live in infamy," Roosevelt announced that Japanese forces had also attacked other Pacific targets: Malaya, Hong Kong, Guam, the Philippines, Wake Island, and Midway Island. He asked Congress to declare war on Japan because of this "unprovoked and dastardly attack." Within an hour Congress complied, with only one dissenting vote, and the United States entered World War II (1939–1945).