'In the first place, if the immigrant who comes here in good faith becomes an American and assimilates himself to us, he shall be treated as an exact equal with everyone else, for it is an outrage to discriminate against anyone 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
[Though he was speaking of all immigrants, his words were directed primarily to European immigrants. This is not an ethnic or race-based issue. Rather it is an illegal versus legal immigration issue.]