"If you don't have a question that is in accordance with the U. S. Constitution, we'll call the next Senator."
"Remember, you swore an oath when you became Senator."
Here it is.
Oath of Office
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.