The Office of the Comptroller of the Currency has finalized a rule replacing certain credit rating references with alternative standards of credit worthiness to help banks determine whether a security is “investment grade.” Published in the June 13 Federal Register, the final rule is identical to the rule proposed by the OCC in November 2011 to implement directives in the Dodd-Frank Act to prevent over-reliance on credit ratings. Congress partly blamed inflated credit ratings for the financial crisis when triple A-rated mortgage securities lost their value as interest rates rose and home values...