What you seem to forget is Trump is the liar-in-chief we have now. Yes, Clinton, Obama, McConnell, Schumer, Nunes, all lie — every politician does. Hillary is a champ at it, and had she won, we’d be seeing much the same schtick from the other side as what’s happening now — probably worse.
But no one is as prolific at lying as Trump. Even now, he’s given way more latitude than anyone before him. Like I said, he the liar-in-chief we have now. Get used to the “witch hunt.” It’s going to go on as long as he’s around. (Much like the “witch hunt” that dogged Obama from day one.)