democrats. very unfairly, because they have a tiny margin in the house. they have eviscerated the rules. they don't give us any fair play. >> the rules to previous impeachment proceedings, you'll participate in that investigation? >> if the rules are fair. >> trump went on to predict his showdown with the democrats would likely end up at the supreme court. the problem for him is he is up against this clause from the constitution, quote, "the house of representatives shall have the sole power of impeachment." that's what it says in article i, section ii. there are no other rules whether to launch an inquiry with a full floor vote. there is more controversy tonight as the president wages war with congress. pressed then secretary of state rex tillerson to help persuade the justice department to help drop a criminal case against an