The fact that US is harboring terrorists should not be news. No need to go all the way to 1950s for this.<p>More recent ones are:<p>Pedro Ramon : bombed Cuba's UN mission to US.<p>Guillermo Novo : car bombing in Washington DC of Chilean Foreign Minister Orlando Leteller.<p>Luis Posada : bombed Cuban airliner in 1976.
Also let's not forget about this:<p><a href="http://en.wikipedia.org/wiki/Unit_731" rel="nofollow">http://en.wikipedia.org/wiki/Unit_731</a><p>The Tokyo War Crimes Tribunal heard only one reference to Japanese experiments with "poisonous serums" on Chinese civilians. ... The Japanese defense counselor argued that the claim was vague and uncorroborated and it was dismissed by the tribunal president, Sir William Webb, for lack of evidence.<p>Some former members of Unit 731 became part of the Japanese medical establishment. Dr. Masaji Kitano led Japan's largest pharmaceutical company, the Green Cross. Others headed U.S.-backed medical schools or worked for the Japanese health ministry. Shiro Ishii moved to Maryland to work on bio-weapons research.
Apparently at the end of the war the Russians captured Lorenz cypher machines and continued to use copies of these with minor modifications subsequently. Probably any Nazis with knowledge of those machines would have had not too much difficulty finding gainful employment in the US in the post-war period as the cold war intensified.