It was Truman's idea to use Nazis against Russia, more than just the with Operation Paperclip.
There was a fateful meeting of the new National Security Council, (which he founded) where it was agreed to build a movement of nationalism. For many years, this was unknown because of the veil of secrecy.
By the time FOIAs were becoming successful, the corporate press began to remove any association between and despite the known and it's followup.