Explain one thing, and I'll let you go. If you really believe in a "fair, open trial," explain why most of the impeachment proceedings went on behind closed doors, with only democratic witnesses taking the stand, and no cross-examination allowed?
If we're talking about unfair trials, what court in America would not allow the defense to call witnesses, would not even allow the defense to cross-examine the witnesses, would hold hearings in secret, but cherry-pick evidence and selectively leak it to a press who is on their side?
If you ask me, that looks a lot more like a Star Chamber kind of ruling than a "fair, open trial." Any judge would throw out a case that was so obviously predetermined, without even considering "evidence and witnesses." The Senate did the right thing by not calling witnesses, marking that impeachment as not even legitimate.