"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 the 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."
Note: In certain circumstances there can be a modification or waiver of the Oath of Allegiance. See the USCIS Policy Manual.
The principles embodied in the Oath are codified in Section 337(a) in the Immigration and Nationality Act (INA), which provides that all applicants shall take an oath that incorporates the substance of the following:
The language of the current Oath is found in the Code of Federal Regulations Section 337.1 and is closely based upon the statutory elements in Section 337(a) of the INA.