just the trump presidency. if the congress allows the president to publicly commit the crime of witness tampering in investigations of the president, then they are allowing every future president to do exactly the same thing. tonight michael is reporting in yahoo news that robert mueller is at the stage of, quote, tying up loose ends. special counsel robert mueller s prosecutors have told defense lawyers in recent weeks that they are tying up loose ends in their investigation, providing the clearest clues yet that the long running probe into russia s interference in the 2016 election may be coming to its climax potentially in the next few weeks according to multiple sources close to the matter. leading off our discussion now, jill wine-banks, and joining us is harry litman.