Now Barack Obama faces a true dilemma: how best to punish Hillary Clinton. After 15 months of fighting her off, as she veered wildly from bully to victim, as she brandished any ice pick at hand, whether racial, sexual, mathematical or marital (in the form of her Vesuvian husband), Obama must decide the most efficacious means of doing to Hillary what she has been trying to do to him: putting her in her place. Her last resort is to continue to press the “Psssst — he’s a black man” tactic. She insisted to USAToday, after the North Carolina and Indiana...