The Consumer Financial Protection Bureau has issued its long-awaited “qualified mortgage” ability-to-repay final rule that, as expected, includes an exception for Fannie Mae and Freddie Mac mortgages and does little to facilitate a rebound in the non-agency sector. Mortgage lenders will be presumed to have complied with the ability-to-repay rule if they originate “qualified mortgages” that prohibit or limit the risky features believed to have harmed consumers in the recent mortgage crisis. That means...