A Ted Cruz super PAC made a curious donation back in June 2015… It gave half a million dollars to former tech executive Carly Fiorina's super PAC, Carly for America. The Washington Post first broke the story back in late July. Super PACs that explicitly support a candidate almost never give in support of other rival candidates. On top of that, at the time, Fiorina was one of Texas Sen. Ted Cruz's main Republican opponents in the 2016 presidential race. That's why the donation was such a mystery — even The Washington Post piece didn't offer an explanation. It was...