While many commenters support the proposed exemption for the government-sponsored enterprises from new risk-retention rules in the short-term, opinions vary as to just how long Fannie Mae and Freddie Mac should enjoy such an exemption and its long-term impact on private securitizations. Federal regulators earlier this year proposed a rule which would require issuers of mortgage-backed securities to hold a minimum 5 percent of the credit risk of the assets underlying their securities unless the deal is backed by “qualified residential mortgages.” The proposed rule would exempt ...