Ah, impeachment. He'd need to have done something outright illegal to make a case for impeachment and removal from office stick. While I think we can agree he's been an absolute disaster and has supported policies that really should be illegal (a subject for another thread(s)), unless he's actually broken the law or done something unconstitutional as above ("Treason, Bribery, or other high Crimes and Misdemeanors" as written in Article 2 Section 4 of the Constitution) there's really no case to be made. Man, that was a long sentence.