The Trump administration wants to replace cash benefits for food with boxed groceries.<br />They claim it would reduce 16 million low-income families' food spending.<br />The White House claims "America's Harvest Box," would save taxpayers $214 billion over a decade.<br /><br />But those savings could come at a staggering cost to retailers that serve low-income families.<br />If approved, Walmart could feel the biggest impact. <br />