I want to know the answer to the following question:
On what day did the U.S. and its allies declar war on Japan?
All the background I'm provided with is that "Before the attack on Pearl Harbor, the 800,000-member America First Committee vehemently opposed any American intervention in the European conflict, even as America sold military aid to Britain and the Soviet Union through the Lend-Lease program.". Is that enough to answer the question?