SEC filing in ResCap case indicates broad sweep in MBS probes

``According to the show-cause filing, ResCap provided its underwriters with "loan tapes," as they're known in the industry, listing pertinent information about all of the underlying mortgages in the securitization pool. The underwriters, in turn, passed loan tapes on to a due diligence firm -- a Donnelly subsidiary -- which pulled a sample of loans to check the sponsor's representations and warranties. Donnelly (which declined a request for comment from my Reuters colleagues Aruna Viswanatha and Rick Rothaker) then prepared Excel spreadsheets documenting its findings for the underwriters.''