Kevin Warsh may be the adult in the room. But can he calm the US economy?

Fed chair presided over unanimous decision to raise interest rates despite intense campaign from White HouseIn the end, Kevin Warsh’s Federal Reserve acquitted itself well. For all the uncertainty he had sparked at the previous meeting of the Federal Open Market Committee, when he refused to provide any indication of what he was prepared to do to tame stubborn inflation, the chair on Wednesday presided over a unanim…