Proposition 65 requires consumer warnings in California regarding various health risks. The American Meat Institute doesn't like 'em, or at least doesn't like 'em as applied to their product. So they sue, seeking a declaration that these warnings are pre-empted by federal law.
So who's representing the American Meat Institute? In an action opposed to Proposition 65?
Just proving that even do-gooder law firms have to eat. In this case, meat.