Yes you know the oath someone takes to protect and defend the Constitution against all enemies, foreign and DOMESTIC. The oath doesn't expire.
What constitution? What version? The one that doesn't include keeping a standing army? Before or after, say... prohibition was ended? Before or after the 13th amendment? A literal reading? Whose understanding of the 'general welfare' clause do you defend? What if 99% of Americans decided they didn't like the Constitution?
Would you be the right-wing reactionary terrorist to kill your own countrymen in the name of your religion (Constitutionalism and the worship for corpses as minor gods who apparently preached gospel and divine laws is a religion by any fair and honest assessment)? Would you put the Constitution ahead of self-determination if the People wanted to with it as they did with the Articles of Confederation?
Why did you take an oath to uphold a list of laws written by dead men? do you really put the State and the Law ahead of your own principles and beliefs?