President Roosevelt tried to avoid repeating what he saw as Woodrow Wilson's mistakes in World War I. Wilson called for neutrality in thought and deed, while Roosevelt made it clear his administration strongly favored Britain and China. Unlike the loans in World War I, the United States made large-scale grants of military and economic aid to the Allies through Lend-Lease, with little expectation of repayment. Wilson did not greatly expand war production before the declaration of war; Roosevelt did. After Japan attacked Pearl Harbor, Guam, Wake Island, the Philippines, Malaya, Singapore, and Hong Kong on December 7, 1941 Congress declared war on Japan the following day, December 8, 1941. Roosevelt often mentioned his role in the Wilson administration, but added that he had profited more from Wilson's errors than from his successes.