Hitler had a screw loose?
He thought Americans were a race of mongrels who could not stand up to his Ayran Supermen. Here's one of his quotes.
don't see much future for the Americans... It's a decayed country. And they have their racial problem, and the problem of social inequalities... My feelings against Americanism are feelings of hatred and deep repugnance... Everything about the behavior of American society reveals that it's half Judaized, and the other half negrified. How can one expect a State like that to hold together?