BY DAYBREAK in Santa Fe, the line of cars already snakes down the street. Families in sedans, builders in trucks and one off-duty taxi queue up to get frozen chicken, a sack of potatoes and a gallon of milk. Everyone in line at the Food Depot, a food bank, gets served, but one couple in their 50s arrived at 5:20am just to be sure. They receive money for food through the Supplemental Nutrition Assistance Programme (SNAP), a federal welfare programme. It lasts them five days.