I'm not sure who "they" are, but Hillary thought Trump was a useful idiot. Unfortunately, she was only half right.
>>>So to take Bush down, Clinton’s team drew up a plan to pump Trump up. Shortly after her kickoff, top aides organized a strategy call, whose agenda
included a memo to the Democratic National Committee: “This memo is intended to outline the strategy and goals a potential Hillary Clinton presidential campaign would have regarding the 2016 Republican presidential field,” it read.<<<
Inside Team Clinton’s year-long struggle to find a strategy against the opponent they were most eager to face.