It’s one thing for a regulatory agency to promulgate a rule and catch a lot of slack from the affected industry. It’s quite another when another regulatory agency takes issue with a rule. The CFPB got a bit of a surprise in this regard when it issued its arbitration final rule last week: the Office of the Comptroller of the Currency expressed concerns about the potential risk the rule could pose to the safety and soundness of the U.S. banking system. In a letter to CFPB Director Richard Cordray, OCC Acting Comptroller of the Currency Keith Noreika, a recent appointee of President Trump, said, “The OCC has a mandate to ensure the safety and soundness of the federal banking system...