The US rehabbed the Nazis and folded them into NATO. Brought them into the space race program. Interned Japanese ONLY. Allowed Nazis to take refuge in Latin America. Went after American communists rather than American Nazis. Brought Japanese war criminals into bio weapons program
This gets even more egregious when you consider all the times the U.S. violated the sovereignty of different Latin American nations (up to and including full invasions and occupations). But hunting Nazis? Nah, that's a bridge too far, let them have little a retirement as a treat.