Wall St stumbles as FBI to review more Clinton emails

U.S. stocks erased early gains and turned negative on Friday after the head of the FBI said it will review more emails related to Democratic presidential candidate Hillary Clinton's private email use. Each of the three major indexes on Wall Street fell to session lows after FBI Director James Comey said in a letter to several congressional Republicans that the agency had learned of the existence of emails that appeared to be pertinent to its investigation. "The market turned south the minute the