With fears that too few qualified residential mortgages will be originated to support a strong securitization market, the American Securitization Forum proposed that mortgage-backed securities should be allowed to include a blend of QRMs and non-QRMs. MBS issuers also called for loosened underwriting requirements for certain non-QRMs.The proposal was included in the ASF’s comment letter to federal regulators regarding proposed risk-retention rules. Comments were initially due last week but federal regulators recently extended...