so i can't draw any other conclusions and i don't draw very many conclusions when somebody lies to congress. >> chuck, you want in here i know. >> cohen is a liar. a convicted liar and admitted liar, but prosecutors don't build cases on one liar's testimony. there's a thing called corroboration and there seems to be quite a bit. glen mentioned mr. weisselberg and mr. picker. lord knows who else might be in the room when they were discussing. >> tapes. >> might be tapes, probably e-mails. likely documents and probably people that these people talked to, and good prosecutors can always figure a way to get that stuff into evidence. you don't build a case on one person. you build it on many people and many pieces of corroborative evidence. that's how we do it. >> turn to you and ask how things changed politically. pete talking about the appetite among republicans in congress to deal with this, but this was a spectacle in the federal courthouse in manhattan.