Democrats hit back at FBI head as Trump presses attacks on Clinton

By Steve Holland and John Whitesides GRAND RAPIDS, Michigan/WASHINGTON (Reuters) - Democrats kept up their attacks on FBI Director James Comey on Monday, accusing him of a double standard after he revealed his agency's probe into more material that might relate to presidential candidate Hillary Clinton's use of a private email server. Clinton's Republican rival, Donald Trump, has seized on Comey's announcement on Friday to press his longstanding charge that Clinton lacks integrity, hoping he can