All Pence had to do is what he said:
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.
Follow the LAW, or resign. Easy Peasy
Easy in every way.
Until you contemplate the number left inside The Beltway if that dictum was strictly followed.
....good start anyway.