under way on a wednesday night. and good evening once again from our nbc news headquarters here in new york. day 790 of the trump administration brought us a new level of vitriol from the president and this comes on this night of especially fevered speculation that robert swann mueller iii is prepared at any moment to transmit his final work product to the department of justice and to the u.s. attorney general. for his part today the president attacked mueller but didn't stop there. he continued his line of attack against john mccain that he started over this past weekend. today in front of a backdrop of tanks in a plant in ohio, in a county that voted for john mccain over barack obama, he silenced the crowd when he made his case that mccain was responsible for the mueller investigation. >> john mccain received the fake