WASHINGTON (Reuters) - U.S. presidential candidate Democrat Bernie Sanders voted on Tuesday in favor of a bill that would require audits of Federal Reserve monetary policy decisions, his campaign said in a statement following the vote. Sanders said he supports the bill because too much of the U.S. central bank’s business is conducted in secret. “Requiring the Government Accountability Office to conduct a full and independent audit of the Fed each and every year, would be an important step towards making the Federal Reserve a more democratic institution that is responsive to the needs of ordinary Americans rather than the billionaires on Wall Street,” Sanders said in the statement. 