Minnesota Rep. Michele Bachmann's campaign lost another high-ranking staff member on Thursday after that staffer defended another former Bachmann official's defection to a rival campaign. Wes Enos, Bachmann's political director, has left the campaign, spokeswoman Alice Stewart confirmed to NBC News on Thursday evening. The resignation comes on the heels of last night's announcement by Iowa state Sen. Kent Sorenson, who had served as Bachmann's Iowa chairman, that he had stepped down from that position to support Texas Rep. Ron Paul's campaign instead. Yesterday, Enos publicly defended Sorenson, an Iowa state Senator, against charges voiced by Bachmann that Sorenson had...