Janet Yellen cautioned that Donald Trump’s criticism of Federal Reserve policy threatens the institution she ran for four years, adding that it’s “not a desirable thing for a president to comment so explicitly on Fed policy.” “To politicize it and to undermine that is something that is essentially damaging to the Fed and to financial stability,” Yellen, who stepped down as Fed chair early this year, said Monday in Washington. “Obviously, presidents can speak out if they choose to and give their opinions about policy. There’s no law against that, but I don’t think it’s wise.” Yellen spoke at a banking forum just days ... (full story)