The battle over legacy MBS continues to rage in courts across the country as Bank of New York Mellon filed repurchase-related lawsuits against two financial institutions, Massachusetts Mutual was allowed to proceed with its claims against Countrywide, and a federal banking regulator sued major banks for alleged MBS misrepresentations. On Aug. 21, BNY Mellon, in its capacity as trustee for a pool of loans known as GE-WMC Mortgage Securities Trust 2006-1, sued WMC Mortgage and GE Mortgage Holdings for their alleged failure to repurchase approximately $680 million in defective residential mortgages. According to the lawsuit filed in New York state court, a holder of more than 25 percent of the voting rights under the pooling and servicing agreement notified...