US NEWS CLINTON-EMAILS 1 SIP

Former U.S. Secretary of State Hillary Clinton addresses the press after attending the annual Women's Empowerment Principles event at UN headquarters in New York on Tuesday, March 10, 2015. The potential 2016 U.S. presidential contender defended her use of a personal email account for official communications, saying it was "for convenience." (Niu Xiaolei/Xinhua/Sipa USA/TNS)