I understand your point, but it doesnt drive the situation home. It should be frequent and used against them for controversial or contradictory actions (this keeps them doing their job correctly). It should be the reason people should get fired or told to step down from their jobs and positions.
How about this oath:
My version of the US oath for politicians:
“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. I solemnly swear to pledge my loyalty to America and its citizens. I pledge to promise to stand against corruption and the delay of information. I swear to not engage in any form of lawfare and abuse of the legal system. I pledge to comply with exposing corruptions, stand against secret oaths and allegiances, and never to filibuster questions or answers. I pledge to protect individual freedoms, liberty, privacy, freedom of expression, right to protest, rights of free markets, freedom of free speech, digital privacy and rights, and the persuit to happiness. My alligence is to build America and protect its values to maintain peace, growth, and prosperity. If my action present the quantrary or contradictory to my oath, I will wilfully step down. So help me God.”
I think this oath should be said before and after each session. It boosts the contradiction of their actions if they act against the interest of their oath.