Original: The pejorative term 51st stater usually refers to non-U.S. residents who emulate mannerisms and culture of an American , or a non-American politician who is a supporter of the United States , especially its foreign policy , to a degree viewed as excessive .
Simplified: The term 51st state usually means non-Americans who like American culture and act like Americans , or a non-American politician who is a supporter of the United States , especially its foreign politics .