It is a disgrace that Americans helped war criminals escape justice as a matter of policy. This was the democrat policy of FDR and Truman.
If you haven’t done so, you should read about Operation Paperclip, how the USA rounded up and brought back quite a few Nazi Scientists, most notably Werner Von Braun and his team that developed the V1 and V2 rockets.
And still, to this day, we have no idea what actual intelligence was gathered by the use of these Nazi war criminals, or if it was of any use, or beneficial to this country during the Cold War. The fact that Nazis/Commies are running this country now, tells me it did diddly-squat.