Nearly 1.8 million New York City residents rely on SNAP to help pay for groceries. Under new federal rules, tens of thousands must prove they are working, volunteering, or in school to keep those benefits. WNYC’s Karen Yi reports the expanded requirements could push many off the program if they fail to comply, raising concerns that vulnerable New Yorkers could lose food assistance amid confusion about the new rules.                                                                                                                                                                                                                                 Got any questions, comments or story ideas? Send us a message at NYCNow@WNYC.org