The text of the vice-presidential oath of office is not written in the Constitution as it is for the president. Instead, the wording of the oath is set by Congress. The current oath was approved in 1884 and is also used to swear-in all senators, representatives, and other government officers. It is:
“I 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.”
