Maybe I've got it all wrong. To me Impeachment system just seems wrong. It's decided by a political vote. You've either committed a crime or you haven't. There should be an independent means of judging this. Not decided by party politics. If Trump gets impeached his supporters will just say it's a political decision. If he doesn't the his detractors will say he was let of because Pence didn't have the political will to impeach. Doesn't seem very robust.