I mean “No man shall hold office who committed insurrection” seems like a mechanism in and of itself.

Who decides who is an insurrectionist?

Simple majority in Congress? Well then Congress can just outlaw the minority party

Supermajority in Congress? Well look at the senate vote for the second impeachment. That doesn’t work either.

Courts? They have a 6-3 supreme court.

States? Then we end up with red states blocking democrats from the ballot by false declaring them to be insurrectionists.

Public Opinion? How do you even measure that?

Criminal conviction of insurrection? Well trump never got convicted of anything involving insurrection.

So here we are…