Operation Paperclip
The wartime activities of some Operation Paperclip scientists would later be investigated. Arthur Rudolph left the United States in 1984, in order to not be prosecuted. Similarly, Georg Rickhey, who came to the United States under Operation Paperclip in 1946, was returned to Germany to stand trial at the Mittelbau-Dora war crimes trial in 1947. Following his acquittal, he returned to the United States in 1948 and eventually became a US citizen.