Brief for Amici Curiae Ahold U.S.A., Inc.; Albertsons LLC; the Great Atlantic and Pacific Tea Company, Inc.; H.E. Butt Grocery Co.; Hy Vee, Inc.; the Kroger Co.; Meijer, Inc.; Publix Super Markets, Inc.; Raley's; Rite Aid Corporation; Safeway Inc.; Supervalu, Inc.; and Walgreen Co. in Support of Petitioners