Both front-runners are battling credibility questions, but from opposite directions. Hassett’s critics on Wall Street say his current job—in which he goes on television to defend the president’s policies and attack the Fed—disqualifies him from leading an independent central bank. Warsh’s vulnerability is different: He wants the job so badly that some question whether his support of lower interest rates and Trump’s broader economic agenda is genuine. “I don’t think you can get this job unless you have made some promise to President Trump,” said one former Fed president