"In the  first place, we should insist that if the immigrant who comes here in good  faith becomes an American and assimilates himself to us, he shall be treated  on an exact equality with everyone else, for it is an outrage to discriminate  against any such man because of creed, or birthplace, or origin. But this is  predicated upon the person's becoming in every facet an American, and nothing  but an American...There can be no divided allegiance here. Any man who says he  is an American, but something else also, isn't an American at all. We have  room for but one flag, the American flag ... We have room for but one language  here, and that is the English language... and we have room for but one sole  loyalty and that is a loyalty to the American people."
Theodore Roosevelt  1907