but simply because of the department of justice rule that the president is not indicted he got away on that technicality. it's up to congress to act. >> you asked john dean about president trump's oval office meeting where he asked comey to let the flynn thing go, according to the mueller report. dean compared that to nixon instructing his chief of staff to have the cia -- to stop its investigation. what do you make of that comparison? do you agree with that? >> he was drawing historical analogies throughout the entire afternoon. one of the other witnesses said this was actually not one of the most striking cases of obstruction in there. and there clearly are cases with more vivid facts, like telling the white house counsel that he would be fired. and firing him if he did not go ahead and fire the special counsel. in other words, ordering the white house counsel to fire mueller and then ordering him to cover that up.