Another perhaps little known to some fact is that tons of people, especially businessmen and politicians, viewed Hitler favorably in the US, until they entered the war. Including his views on Jews etc.

He was a kind of their mascot against "the reds" and against unruly workers and working classes in the US.

Also, contrary to some belief, before and even during the war, the US mostly could not care less about the plight of Jews at the time, even when it was known what was happening to them. E.g

http://en.wikipedia.org/wiki/MS_St._Louis

http://en.wikipedia.org/wiki/History_of_antisemitism_in_the_...