SuperPACs and Trump's wife: How a photo dispute highlights weakness in campaign finance rules
Republican presidential hopeful Donald Trump's wife Melania speaks to the crowd during a rally February 8, 2016 in Manchester, New Hampshire (AFP Photo/Don Emmert )

There’s no evidence to support Donald Trump’s claim that Ted Cruz played a role in a super PAC’s attack on his wife. But federal rules barring coordination between candidates and the super PACs that support them have been so rarely enforced that even if Trump were right, it’s uncertain the Cruz campaign would be penalized. The…