David Gergen: “If they've been lying to us on this, why are we to believe them on the collusion issue?”

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…

It's very, very big. Not legally, but politically, it's a very, very big deal.

If he comes out and throws cold water on this, then I don't think it goes anywhere.

I think this the very idea that in 2024, we may have two men running against each other Biden and Trump, who would both be in their 80s if elected, that it too is enough to say, well, what are we doing here?