Native born NAZI's have never been thrown out. Only those who immigrated to the US and lied on their visa and citizenship applications have been expelled. Communists never have been expelled. Its never been a crime to be a member of the Communist Party and its no ones business unless you are in government position requiring security clearance. Although Gus Hall is dead, I believe they still run candidates for President (on their own ticket, in addition to the Dem line).
Did a google search on this.
COURT ORDERS AMERICAN-BORN NAZI DEPORTED The US has a long history of deporting Nazis, most of who were born in Europe and immigrated to the US after World War Two. Recently, however, a federal appeals court ordered someone who was born a U.S. citizen deported for Nazi activities. Go to www.visalaw.com for the full article.
I think all with primary allegiance to another country should be kicked out. No special treatment for Communists.