And American businesses didn't mind being allied with the Nazis leading up to the war (Hitler saw Henry Ford, an out and out antisemite, as an inspiration and was given the highest nazi award to a foreigner), plenty of American businesses either directly or indirectly helped to finance the German war machine leading up to the war, Nazi Germany didn't build a multimillion dollar war machine in a global vacuum .... and then America allied with Nazi veterans AFTER the war ... it's basically Nazi scientists that sent them to the moon.
Everyone made deals with the devil to benefit themselves at different times for different reasons.
We can't point out one side allying with nazis and ignore others who did the same.
Even in Canada where I'm from a lot of critics and historians have pointed out that after the war ... it was far more easier and acceptable to be a Nazi or a Fascist then it was to be a Socialist or Communist.