[krb]

Hitler was democratically elected, and declared war on many countries (including ours).

[Robert A Cook PE]

Funny thing is, if Hitler did NOT declare war on th US, Churchill and FDR would have had a real hard time trying to figure out a way to actually get the US into a fighting war against Germany.

My guess?

FDR would have "aided Britain in their fight against Japan" .... by reinforcing London and Portsmouth and Gibraltar and Alexandria and Hafia and Malta and Iceland "against Japanese aggression" with American troops, ships, and arms.