Cedar Rapids Gazette: A proposed change to the eligibility rules for stores accepting payments from the federal Supplemental Nutrition Assistance Program, formerly known as food stamps, is drawing strong opposition from the food retailing industry. The proposed rule would drop a retailer from SNAP if more than 15 percent of its total food sales are for items that are “cooked or heated on site before or after purchase.” The proposal would require retailers to offer at least seven different varieties of food items in each of the four staple food categories. Ankeny-based Casey’s General Stores and other food retailers oppose the rule, contending it will hinder food access for the many SNAP recipients who use their benefits at convenience stores in small rural communities, or at night after supermarkets have closed.