The major credit-rating agencies serve a vital function for American businesses and consumers. They assess risk in order to curb potential losses that can result from reckless lending practices. The major U.S. rating agencies for business are Moody's Investors Service, Standard & Poor's, Dun & Bradstreet, Fitch Ratings and A.M. Best. Banks rely upon TransUnion, Experian and Equifax in the consumer sector. Assessing Risk Banks must have an independent way to determine the creditworthiness of consumers before extending loans and issuing...