him and that obsessive focus and the punishment the intimidation has worked. to defy mr. trump is to invite the president's wrath, o's ri schism within the party and a premature end. >> joining me is staff writer for the new yorker. let me start with you, there's one sort of basic element to this i think is kind of interesting if simple, which is that other presidents have this feeling that they understand the way politics work, that members of their own party might have to cross them or distance themselves on tough votes. barack obama would let sleeping dogs lie if a moderate member had to come out against him. trump isn't that way. everything is taken personally, and that has effectively kept a kind of discipline. >> yeah, you know, chris, it isn't a matter of loyalty that's going on here. so some people know, previous presidents know how politics