David Gergen: “But, when you go after a fly with a sledgehammer, you can get the fly, but you often cause a lot of ruckus.”

I think the turning point that came were the midterm elections. The fever broke with those midterm elections. And what we've seen since then is a steady decline in Trump's credibility and in his position with the American people, and a…

If he had a receptive audience, and I will tell you, when everything -- when all the facts were to come out, it would be like Nixon and the tapes.

I think a lot of Americans do see it as disqualifying. And they're worried about it.

Sadly, you know, I think for a variety of reasons he should not. I just, I don't think either Trump or Biden should be running.