The U.S. Department of Agriculture has published a final rule updating the stocking requirements for retailers authorized to accept Supplemental Nutrition Assistance Program (SNAP) benefits. Under the new rule, SNAP-authorized stores must stock seven varieties of staple foods in each of four categories—protein, grains, dairy, and fruits and vegetables—more than doubling the previous minimum requirement. The USDA said the changes also place greater emphasis on whole foods, increase requirements for perishable items, and prevent certain snack foods from counting toward staple food inventory.