Mark Sanford: I support you, Mr. Trump. Now release your tax returns.

The former governor of South Carolina with a novel approach to hiking the Appalachian Trail endorses Donald Trump first, and asks him to do something second. He has obviously not read “The Art of the Deal.” Neither have I, to be honest, but I assume Trump recommends a tougher approach to negotiating than that. With his particular experience, I’d have thought Rep. Sanford would know better than to give it away for free. But it seems clear that Trump is not going to release his tax returns, no matter what anyone says.