that would not have come as a surprise to the committee today when he showed up. my understanding is that they formulate very specific questions and that it can be equally revealing -- maybe not equally revealing, but revealing and interesting when a witness won't answer a question. >> i think you're also paying close attention to developments involving the former vice president. we know the committee has been interesting in speaking to him. do we know where tonight those negotiations stand? >> i think they're still negotiating. we don't know yet. there are some people from pence world who have told us that there is no chance in hell that he is going to testify. there are other sources in pence world who have told me they are trying to work something out, that the vice -- former vice president doesn't want it to be a circus. maybe he would go in privately. maybe he wouldnswer questions in writing, which is something the committee does not want. but here's one thing that's happened, as we've seen in the last couple of days. trump has been attacking pence