[#-3]

There have really 4 examples of expulsion from congress. Treason, Rebellion, Bribery, Racketeering.

I certainly think openly supporting sedition and domestic terrorism would fit right in. But they would need 72 republicans, and that ain't happening, as republicans no longer than the institutions of governance seriously, they are going to stick their neck out to fix something when their official policy is to destroy it.