To the 3 or 4 people who made this argument: A little less reason for Hitler to do so, without the USA engaging in an undeclared war, I would think.
To Johnrankins: That philosophy didn't work well before then, and it sure wouldn't then. The USA had a powerful isolationist movement. FDR re-arming and putting the economy on a war footing would have given isolationism a shot in the arm.