[MichaelCollins]

Removing each other from committees is a far cry from kicking each other out of Congress. That has only happened twice since the 19th century, and both times it came after a criminal conviction. Merely being an absolute idiot isn't enough to get a 2/3rds vote to kick out a congressmen because that would be mutually assured destruction; they all know they're all absolute idiots so they don't expel each other out for that.

Also,

> Both the House and the Senate make their own rules,

The rules for expelling congressmen are set in the US Constitution, they don't just make it up as they go. Unless you're talking about their ability to amend the US Constitution, but that's even less likely than kicking these guys out the normal way.

The best way to get them kicked out would be to have them convicted for bribery/corruption, then you might get a 2/3rds vote to expel them.