The last 12 months have not been kind to WalMart. When the world's largest retailer bowed to pressure to raise wages for its lowest-paid employees, the living wage crowd cheered. In short order, it became apparent that the reverberations from the $1.5 billion endeavor would spell trouble for the company. When a series of ill-fated efforts to squeeze the supply chain failed to plug the gap, the company resorted to store closures (or "plumbing" as WalMart calls it), job cuts in Bentonville, and reduced hours. Finally, in October, WalMart threw in the towel and cut guidance. Its shares plunged. Now,...