When did Teddy Roosevelt say "There can be no fifty-fifty Americanism in this country..."?

Question

The full quote is: "There can be no fifty-fifty Americanism in this country. There is room here for only 100 percent. Americanism, only for those who are Americans and nothing else." -Theodore Roosevelt

Answer 1

On immigrating into America one has to swear a loyalty oath as below

I hereby declare, on oath, that I absolutely and entirely renounce and abjure all allegiance and fidelity to any foreign prince, potentate, state, or sovereignty of whom or which I have heretofore been a subject or citizen; that I will support and defend the Constitution and laws of the United States of America against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; that I will bear arms on behalf of the United States when required by law; that I will perform noncombatant service in the Armed Forces of the United States when required by the law; that I will perform work of national importance under civilian direction when required by the law; and that I take this obligation freely without any mental reservation or purpose of evasion; so help me God.

Once you have done this then you agree to be an American and renounce your former allegiance whether it be Ireland, Poland, Germany, England or anywhere else. You must be 100% American. That is one reason why there is no such thing as an 'African American'.