The 14th Amendment 'Gimmick'

  The text in question that suggests it might be used on Trump?

There's a piece that says Congress has the power to 'banish' from any future federal public office....any current or retired American politician or military official...who is deemed by congress to have “engaged in insurrection.” 

Original purpose? This was a piece written by the Republicans shortly after the Civil War, and intended to prevent Civil War officers or politicians of the Confederacy from being elected to Congress or the presidency.

Yes, the 'evil' Republicans created this....against the 'double-evil' Democrats of the south.

Can you be 14thed and then have another vote to redeem your 'bad-boy' status?  Yes.  That's the funny thing about the written text.

Various Confederate officers who never were 14thed?  Yeah, that's also part of the story (count in General Joe Wheeler, who would be a House member in 1880, and then appointed as a General in 1898 for the Spanish-American War).

The three key problems here?

1.  You would open up the whole history of the Civil War and basically admit that the text was designed for bad-boy Democrats.  Trump's people would seize on this moment, and the opening of the history discussion might shock some folks.

2.  Even if you did accomplish the 14th goal of preventing Trump future office....the whole 2022 campaign season would then be about getting the 'right' people in, and undoing the whole 14th gimmick.  In simple words, the whole election would be about your position on Trump, and nothing else.

3.  Finally, the insurrection-chatter gets opened up....completely.  You could have weekly 14th meetings where various public officials were guilty of triggering insurrections (not just around DC, but around various states and urbanized communities).  Dozens of Antifa and BLM folks might suddenly get named via the 14th and can never participate in an election...even as a city council member.  Pelosi?  She could be accused of insurrection words which trigger a 14th meeting and she could be dumped.  

So opening up the 14th 'bridge' and thinking it'll solve your problems....no, it'll just complicate things even more.  

You could easily have a hundred people accused for 14th amendment purposes and Congress would be drawn into weekly sessions to judge so-and-so....on insurrection behavior.