There has been little progress in the development of new ways to pay for credit ratings even though researchers have seven proposed systems designed to address the conflicts of interest that have plagued the non-agency MBS market, according to a new Government Accountability Office report. The GAO noted that there were five significant ratings compensation models when it last reported on the subject in 2010, and two more have since been proposed. But the authors of these models have done little additional work to flesh them out, and none has been adopted in the marketplace, the GAO said. “Given that the [rating...