That's one reason why America is the best. In most places, even the grandchildren of immigrants aren't seen as true, say, Algerians. In America, as long as they do it legally, immigrants are seen just as American as a full-blooded Choctaw.
What you are describing is "ethnic nationalism." That is similar to the Nazis. Most nationalists don't care if you came from Ukraine, Brazil, Poland,etc. Nationalists don't want to invade other "inferior" countries, they want a strong military to PROTECT their country.