we he have to ensure now that the congress exercises the role of checks and balance to ensure that a president cannot fire the person conducting an investigation of that person. and that is after president trump himself called the investigation a taxpayer funded h cherade and a hoax. so we know this is in many ways a cover up. it's an obstruction of justice and it is something that ultimately could turn into russiagate because that's the subject of the investigation that jim comey was probing this white house and the campaign that donald trump ran to win the job. >> but senator you call it a cover up. do you know that for a fact? or you just suspect that? a lot of democrats have a lot of