Comey on Capitol Hill again to talk extremism, Clinton email

WASHINGTON - For the second time in two days, FBI Director James Comey will be on Capitol Hill to answer questions about the agency's response to recent acts of extremist violence and whether more could have been done to prevent attacks in Orlando and New York.Comey also is expected to face questions about why the FBI granted immunity to Hillary Clinton's former chief of staff as part of a now-closed investigation into Hillary Clinton's use of a private email server as secretary of state.Comey w