The Federal Housing Finance Agency late last month issued two final rules that will give the Federal Home Loan Banks somewhat more flexibility in setting collateral requirements for advances and managing their acquired member assets (AMA). A new AMA rule was necessary because the Dodd-Frank Act requires financial regulators to remove references to ratings, which had been used in setting limits on their AMA programs, most of which involve purchases of mortgages from member institutions. Under the new rule, the FHLBanks will be able to choose their own models to determine credit enhancement requirements. The FHFA also deferred...