Obama says Clinton email server a 'mistake,' but denies national security jeopardized
Obama added that he was not initially aware that Clinton was using the private server, which was kept at her home in Chappaqua, N.Y., as opposed to a professional data center
President Obama said Sunday that Hillary Clinton's use of a private email server to conduct her correspondence while secretary of state was a "mistake," but denied that U.S. national security had been jeopardized as a result.