re: If Trump actually becomes mentally incompetent, what should be done?

I guess this is promoted by book tell all.

I figured him for psychopath during primary. I doubt his mental capacity has changed.

His emotional makeup appears weak. Same as day 1.

His psychological makeup seems weak and bizarre. Same as day 1.

Egoically motivated republicans in house would have to make the judgement that he is a threat to their careers. he'd have to do something tv thinks is scary bad.
Or Mueller comes out with believable evidence to house of money laundering, with no necessary change in psychology.