The latest wrinkles in repurchase policies at Fannie Mae and Freddie Mac are widely seen as incremental changes that at least point in the right direction. The two government-sponsored enterprises last week announced a narrow adjustment in how loans with minor payment problems can still qualify for buyback relief if they are current 36 months after origination. The new framework also provides buyback protection for mortgages that come clean in the GSEs’ quality control checks and an alternative to automatic repurchase of loans when private mortgage insurance is canceled. Only about 2 percent of loans go...