Leader of the Banned
Beach Fanatic
Sedition
Sedition is overt conduct, such as speech and organization, that tends toward insurrection against the established order. Sedition often includes subversion of a constitution and incitement of discontent toward, or resistance against, established authority. Sedition may include any commotion, though not aimed at direct and open violence against the laws. Seditious words in writing are seditious libel. A seditionist is one who engages in or promotes the interest of sedition.
Grounds for immediate impeachment? Asking for a friend.
Actually, if Trump were to pull something, I think there could be impeachment charges of abuse of power. If he does end up being elected he could be impeached again, and all the charges from last year's impeachment could be tacked on. If the Dems get a majority in the Senate, they could vote to call witnesses. If he goes full fascist, impeachment would get much broader support than last year.