Sen. John McCain (R-AZ) and his aides swear the Syrian “rebels” he was pictured last year with weren’t ISIS members or supporters, and the mainstream media is by and large buying the 2008 GOP presidential nominee’s story. Sen. Rand Paul (R-KY) has endured brutal criticism—media fact checkers, reporters, and political figures have shredded him—for questioning just who McCain posed with. But a closer look at the situation tells perhaps a different story than McCain’s office or the mainstream media have pushed. The criticism of McCain centers around how the Arizona senator met with Syrian rebel leaders in May 2013 when...