New due-diligence rules will likely result in increased costs for issuers of non-agency mortgage-backed securities and increased disclosures for investors. Due diligence firms are also divided on whether to assume the "expert liability" required by the Securities and Exchange Commission regarding due diligence performed on MBS. Vicki Beal, a senior vice president at Clayton Holdings, said Clayton – a leading MBS due diligence provider – would likely be willing to take on the expert liability requirements. However, she said Clayton’s assumption of the liability would require MBS issuers to pay more for Clayton's services. The SEC issued...