“When in 1909 our battlefleet returned from its voyage around the world, Admirals Wainwright and Schroeder represented the best traditions and the most effective action in our navy; one was of old American blood and of English descent; the other was the son of German immigrants. But one was not a native-American and the other a German-American. Each was an American pure and simple. Each bore allegiance only to the flag of the United States. Each would have been incapable of considering the interests of Germany or of England or of any other country except the United States.”

2016, Convention (August 2016)
Context: We’re one team. One American family. When any member of our family is suffering, we’ve got to be there for each other.... We have to keep on uniting as one team. As one people. As one nation.

2000s, 2001, Islam is Peace (September 2001)
Context: America counts millions of Muslims amongst our citizens, and Muslims make an incredibly valuable contribution to our country. Muslims are doctors, lawyers, law professors, members of the military, entrepreneurs, shopkeepers, moms, and dads, and they need to be treated with respect. In our anger and emotion, our fellow Americans must treat each other with respect.

Interview with Claud Cockburn, as quoted in “Mr. Capone, Philosopher,” Cockburn Sums Up (1981)

1910s, Letter to the American Defense Society (1919)
Context: 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 man's becoming in very fact an American, and nothing but an American. If he tries to keep segregated with men of his own origin and separated from the rest of America, then he isn't doing his part as 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, and this excludes the red flag, which symbolizes all wars against liberty and civilization, just as much as it excludes any foreign flag of a nation to which we are hostile. We have room for but one language here, and that is the English language, for we intend to see that the crucible turns our people out as Americans, of American nationality, and not as dwellers in a polyglot boarding-house; and we have room for but one soul loyalty, and that is loyalty to the American people.

1910s, Address to the Knights of Columbus (1915)
Context: In my Cabinet at the time there were men of English and French, German, Irish, and Dutch blood, men born on this side and men born in Germany and Scotland; but they were all Americans and nothing else; and every one of them was incapable of thinking of himself or of his fellow-countrymen, excepting in terms of American citizenship. If any one of them had anything in the nature of a dual or divided allegiance in his soul, he never would have been appointed to serve under me, and he would have been instantly removed when the discovery was made. There wasn't one of them who was capable of desiring that the policy of the United States should be shaped with reference to the interests of any foreign country or with consideration for anything, outside of the general welfare of humanity, save the honor and interest of the United States, and each was incapable of making any discrimination whatsoever among the citizens of the country he served, of our common country, save discrimination based on conduct and on conduct alone.

On conclusion of case Reno v. American Civil Liberties Union — cited in [Goldsmith, Jack L., Tim Wu, 2006, Who Controls the Internet?: Illusions of a Borderless World, Oxford University Press, 22, 0195152662]

“Confessions of a Wild Bore” in Assorted Prose (1965)

White Self-Hate: Master-Stroke Of The Enemy
1962, White Self-Hate: Master-Stroke Of The Enemy

Thank You Tour - Cincinnati, Ohio https://www.youtube.com/watch?v=PBqIUF-cdgY#t=15m38s (01 December 2016)
2010s, 2016, December