The representations and warranties used in jumbo MBS can sufficiently handle some breaches but fail to completely protect investors, according to Moody’s Investors Service. In a report released this week, the rating service noted that issuers use two main varieties of reps and warrants: those that allow for an open-ended review of loans and those that employ a prescriptive framework. The open-ended reviews are seen in jumbo MBS from Redwood Trust, WinWater Home Mortgage and others...