Two powerful lobby groups in the food industry, The Grocery Manufacturers of America and the Organic Trade Association, recently intervened as friends of the court in a federal consumer class-action lawsuit accusing the nation's largest supplier of private-label organic milk of consumer fraud. In what has been described as "the largest scandal in the history of the organic industry" USDA investigators, in 2007, found that Aurora Dairy had willfully violated federal organic standards. However, industry lobbyists are now concerned that convicting Aurora will set a dangerous legal precedent. Aurora bottles private-label organic milk for Wal-Mart, Costco, Target, Safeway and many other grocery chains.