If Democrats had an equivalent to MTG in Congress somehow, we wouldn't need Republicans to keep him/her out of Comittees. We'd do it ourselves in a heartbeat. Liz's threat means nothing.
The threat is that when the GOP has control, they'll remove committee assignments from Ilhan Omar, Rashida Tlaib, Cori Bush, or some other people Fox News is mad at. And if they have the majority, they can do that and there's nothing Dems can do about it.
That would suit House Democratic leadership just fine but give rise to a load of insufferable theatre.
No it wouldn't? Steny Hoyer literally gave a floor speech today defending Omar, Tlaib, and Ocasio-Cortez and said that nothing they've said is comparable to what MTG says
If it happened, Hoyer would defend them in public to score political points (this is the insufferable theatre I mentioned). However, he would probably be pleased to see anti-establishment Democrats be disempowered within the chamber, just as many Republicans weren’t prepared to back Liz Cheney publicly but could support her in a secret ballot.