The Oath of Office for United States Senators

The Oath of Office for United States Senators

United States FlagI do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; that I take this obligation freely, without any mental reservation or purpose of evasion; and that I will well and faithfully discharge the duties of the office on which I am about to enter: So help me God.

If you wish to know about the history of this oath, you can visit the senate.gov website.