I don't think so. Pearl Harbor changed us overnight from isolationists to nonisolationists. It was then a foregone conclusion that eventually we were going to go to war against German. Once the door was open and we had our foot in it, that was it! And almost immediately, hitler declared war on us which totally debunks your premise. The point that I was making was that the revisionists and conspiracy theorists position was that FDR knew that the Japanese were going to strike Pearl Harbor, and that he let the attack go on to make it easier to declare war. The next day, FDR asked congress to declare war on Japan only, since the Germans had nothing to do with it (sorry Bluto). Hitler made it easier on everyone by declaring war on the US, hoping that the Japanese would be feeling warm and fuzzy and declare war on the Soviets. Of course we know that the Japanese wanted no part of that equation and stayed out of that fight (for now). And maybe the US would've declared war on Germany later, and maybe not. If it did, it probably would have been as a result of the undeclared u-boat war between the USN and the KM that was going on in the North Atlantic. It happened in 1917, so why not in 1942 or 43. This is just my opinion of course. I think that the US would have declared war later, but not sooner. Maybe something else would have happened, who knows. I do believe that if Hitler wouldn't have declared war when he did, even someone as daft as he was wouldn't have done so much later, say some time in 1943 considering the reverses in the Eastern Front and North Africa, but then again, that is my opinion. Good thing for all that he was a moron and declared war when he did.