Credit Suisse this week issued a $91.2 million non-agency MBS backed by seasoned FHA mortgages. CSMC 2017-FHA1 marked the first non-agency securitization of re-performing FHA mortgages since 2010. The deal received an A rating from DBRS and an A1 rating from Moody’s Investors Service with subordination of 16.50 percent on the senior tranche. Moody’s cited a number of credit “challenges,” including uncertainty about FHA insurance payouts for liquidated mortgages, insufficient information on loan modifications and weak representations and warranties. The mortgages in the deal have...