At the beginning of July, more than 2,000 families with undocumented immigrants stopped receiving food stamp benefits due to a change in Utah’s rules. Now a growing number of them are showing up at emergency food pantries confused and needing help. “But, of course, I have to feed my family,” said an undocumented mother of five who works as a housekeeper at a nursing home. She is among those who recently lost food aid. Earlier this year, the state announced it would begin to fully count the income earned by all members of a household when determining food stamp eligibility....