Federal regulators have implemented a number of rules in recent years aimed at moving banks away from a reliance on credit ratings when making investing decisions. Officials at the Federal Deposit Insurance Corp. stress that if a bank’s management doesn’t have comprehensive understanding regarding a security, the bank shouldn’t invest in the MBS or ABS. “The gist of these new requirements is simple: banks should understand the risks associated with the securities they buy and should have reasonable assurance of receiving scheduled payments of principal and interest,” said Robert Hendricks, capital markets policy analyst at the FDIC. In an FDIC report, Hendricks provided...