Operation Paperclip was a secret program of the Joint Intelligence Objectives Agency (JIOA) in which more than 1,600 German scientists, engineers, and technicians, such as Wernher von Braun and his V-2 rocket team, were recruited in post-Nazi Germany and taken to the U.S. for government employment, at the end of World War II; many were members and some were leaders of the Nazi Party.
More than 1,600 Germans were recruited in post-Nazi Germany and taken to the U.S. for secret government employment.
We know the program was secret but we don't know if their employment itself was secret or not. It's confusing for the system.