SEUNG MIN KIM, CNN POLITICAL ANALYST: Whether these senators feel like they do need to see more in terms of witnesses and documentation. And that's going to be the big pivot moment to watch.</s>JOHN BERMAN, CNN ANCHOR: Yes. I have to believe it's hard for -- it will be hard for Susan Collins or Mitt Romney or Lisa Murkowski or any of the moderate Republicans to explain away the Parnas documents, explain away the Giuliani letters, explain away all this new stuff as they consider the witnesses. This has to complicate their lives somewhat (ph).</s>KIM: I mean it certainly does. But right now I know that they are -- they're -- I mean, as we all are, these senators are being, you know, pounded with new information. They are also, you know, playing catch up to a lot of what -- a lot of the information that came out during the House impeachment proceedings. They tell us, you know, we had other things going on during -- in our own Senate lives while the House impeachment inquiry was going on. But, you know, they will certainly -- I mean they are the type of senators who will absorb that kind of information and will make a determination at the end of the day whether they need to see more, either hear more from witnesses, such as John Bolton or Mick Mulvaney, or subpoena some key documents that they feel could shed more light on what exactly may have happened here.</s>ALISYN CAMEROTA, CNN ANCHOR: Seung Min, Joe, thank you very much. Kara, thank you for all of your reporting. Great to have you.</s>BERMAN: So why was this private citizen, Robert Hyde, this Republican congressional candidate, talking about surveilling a U.S. diplomat overseas? We're going to speak to a former ambassador about these apparently dark new details, next.
Senators Open to Impeachment Witnesses