David Gergen: “So it's going to be a dilemma that the Democrats will need to think through carefully and be very careful what they…”

I think it's going to take something usually unexpected or a dramatic change in his health or a prison sentence to stop him.

I think the signs are just as Margaret says. They are saying that he is increasingly interested. Strikingly, Anderson, his interest seems to intensify when he sees Biden in trouble.

Maintaining the status quo with regard to the filibuster is unacceptable for him.

I think the evidence is still coming in that this country is deeply divided.