The chairman of a congressional committee on Thursday subpoenaed Federal Reserve documents and communications related to a 2012 leak of monetary policy information, ramping up his attack of the central bank’s handling of the case. Jeb Hensarling, a Republican of Texas who chairs the U.S. House of Representatives Financial Services Committee, said in a release that the Fed failed to comply with document requests from the panel in connection with market-sensitive information that was leaked to a private financial newsletter.