through an essential consultants l.l.c., bob mueller knew that information in movement i think it's probably fair in all aspects of the inonvestigaob mueller is four to six months ahead of the public understanding. >> schifrin: i want to show a tweet that president trump put out in defending himself. he says the russia witch hunt is rapidly losing credibility. how about obstruction? there is no capital o obstruction. the president is fighting back. if the predent is fighting back can that be obstruction? >> obstruction can be fighting back. obstruction is corruptly trying to interfere and impede a iminal investigation. so you can go back, for example, the statement that the pre made, according to jim comey, about michael flynn, let this go, let this thing against flynn. go that certainly is evidence obstruction. what we don't know is what was the intent of the president in making those statements. was ererrupt intent behind