Mortgage lending allies, free-market advocates and Congressional critics of the Consumer Financial Protection Bureau this week took issue with some of the CFPB’s most significant mortgage rules and its use of regulatory enforcement actions to establish policy they said would be more appropriately set in the traditional public notice and comment process. Former Federal Trade Commission official Todd Zywicki, now a law professor at George Mason University, told members of the Senate Banking, Housing and Urban Affairs Committee that many smaller banks have chosen to exit the mortgage market rather than bear the regulatory cost and risk associated with complying with the numerous mortgage regulations promulgated by the CFPB. Citing a survey of small banks conducted by GMU’s Mercatus Center, Zywicki said...