Tricky Dick Nixon got a pardon before being found impeachable or guilty in a court. He signed to accept it despite a Lawyer sent along by POTUSA Ford explaining that accepting a Pardon is legally equivalent to a Guilty Plea, according to USA Federal Court Precedents. Up to that point Nixon had not been convicted and the Impeachment process never got to a Senate vote.  Despite accepting the Pardon Nixon went on to claim that he was "not guilty", so waiting for Impeachment or for a Court Conviction could be a better solution for Trumpster Divers, although one wonders if facts and reason can ever persuade them that Trump is not what he poses as.