Concerns about the functionality of the to-be-announced market and potential incentives for riskier lending have prompted some to suggest that legislation under consideration in the Senate to reform the government-sponsored enterprises should remove the capital markets option for risk sharing and rely solely on a guarantor model. A number of agency MBS participants aren’t too pleased with the suggestions and have countered that a capital markets option is necessary in the country’s housing finance system. Under the capital markets option envisioned in the GSE reform bill from Sens. Tim Johnson, D-SD, and Mike Crapo, R-ID, investors would hold...