The Senate Conservatives Fund, founded by former South Carolina Senator Jim DeMint, has endorsed Bryan Smith in his campaign to upset eight-term incumbent Mike Simpson in May’s Republican primary. The fund adds to Smith’s list of endorsements, which so far includes the hard-right Club for Growth, The Madison Project, FreedomWorks, Citizens United, the National Association of Gun Rights and Young Americans for Liberty. Simpson’s endorsements include some heavyweights, such as the U.S. Chamber of Commerce and the National Rifle Association. Here’s the full release from the Senate Conservatives Fund: FOR IMMEDIATE RELEASE Tuesday, March 11, 2014 Contact: Matt Hoskins (202)...