I think the Church Committee made an effort, asking about journalists paid by the CIA, but it was lost down the memory hole.  People were still naive enough to think that our government--even the CIA for the most part--was trying to serve the country.  Few people knew about Operation Paperclip.  Another media failure.  Had Americans known that a bunch of mind-control  65a8   doctors (like Joseph Mengele) were being imported to America to try out their tactics  on innocent, unwitting Americans, after so many American sons and brothers and fathers had given their lives fighting these same Nazis, they would never have stood for it.