lying to congress. so it does put him at risk of a potential perjury charge. the more you say, the more chance there is that there is something that could be interpreted as a lie. and then second, when you cooperate with prosecutors' offices in particular the southern district, there is no halfway. you have to tell them everything you know and everything that you've been involved in. and from what we know cohen doesn't have any immunity. so if he goes in and talks to them and tells them he has been involved in other crimes, he potentially has risk there too. >> and the flip side of that, that bodes well for his credibility. >> yeah, i think most people thought that he was generally credible. the republican house members tried to make issue of his credibility. i don't think any of those blows landed. most folks thought that he was credible. and in fact on some you thises everyo issues even the president noted his credibility. one of the bright spots for cohen's testimony is that he