LOYAL

We have a long history of accusing certain ethnic and racial groups of being disloyal to the nation and loyal instead to a foreign country or institution. 

I remember when an Irish-American Catholic could not be elected President. No way.  Catholics were considered potentially disloyal--they allegedly took orders from the Pope. (My grandmother had a more tolerant American Catholic view of the Pope. She used to say that what a priest don't know, won't hurt him, especially about contraception.) 

The election of JFK, a Catholic, was an astounding event (now forgotten). President Obama,  accused by scum of not being a citizen, provided an even bigger change in 2008.