of the united states and the man who literally wrote the rules under which robert mueller was appointed joins me now. so, let's start, neil, with this. when people say will the president fire robert mueller, the president personally cannot fire robert mueller. how would he go about -- what would he have to do to remove him? >> he might try and fire him directly. he might constitutionally be able to do that. or he could order the acting attorney general under the regulations rod rosenstein who is the number two, but jeff sessions is recused because he himself has some collusion with russia allegations or something like that. he could order rosenstein to fire him if rosenstein doesn't fire mueller then he could order rosenstein fired and go fought next person down, rachel brand in the department, and go down until he finds someone willing to fire him. and really this is a consequence of our constitution. our founders gave the president article 2 powers to over prosecu prosecutors. he does ultimately have the