>> mark, what are the politics for the members sitting there asking these questions? >> significant. mueller is the one person in this whole scenario who's seen as an honest broker. he's the last boy scout in washington. so of any of the witnesses who could testify, he's going to be most important. i think it's going to be difficult for republicans to indict him in his testimony. >> they're going to try. >> they're going trying to because they were saying earlier he's been exonerated. so if they start attacking mueller, he was the guy the president said exonerated him, so which is it? >> i think that's difficult politics for republicans. >> democrats as well. these hearings are just theater and performance, everybody knows what everyone's going to say, they've got they're little sound bites. you don't know what mueller is going to say. >> i think it is tough for