A federal judge on Friday said he was blocking subpoenas that the Justice Department served to Federal Reserve Chair Jerome Powell in a probe purported to be about the management of the central bank's renovation. "A mountain of evidence suggests that the Government served these subpoenas on the Board to pressure its Chair into voting for lower interest rates or resigning," Judge James Boasberg, the chief judge on the U.S. District Court for Washington, D.C., wrote in a court filing. Boasberg continued: "On the other side of the scale, the Government has produced essentially zero evidence to suspect Chair Powell...