From Guns.com:

The 26-page brief, submitted by the attorneys general of Massachusetts, Connecticut, Delaware, Hawaii, Illinois, Maryland, Michigan, Minnesota, New Jersey, New Mexico, New York, and Oregon, as well as the District of Columbia, supports a controversial $10 billion lawsuit brought by Mexico against some of the biggest names in guns including Barrett, Beretta, Century Arms, Colt, Glock, Ruger, and Smith & Wesson.