Powell has said politics don't play a part in Fed rate decisions. He and his colleagues have held the key overnight borrowing rate in place since December, though markets largely expect a cut is on the way not at the Fed's July meeting, but in September.

Vought also suggested that Powell misled Congress by saying the headquarters had never had a serious renovation, saying that a 1999-2003 update of its roof and building systems counts as a “comprehen...