SNAP EXPANSIONS AND PARTICIPATION IN GOVERNMENT SAFETY NET PROGRAMS
研究了SNAP（补充营养援助计划）扩张对学校免费午餐和WIC（妇女、婴儿和儿童特别补充营养计划）参与率的影响，发现每增加1美元SNAP支出，联邦政府需额外支出74美分用于相关项目。
This paper investigates the interactions between health and nutritional assistance programs such as Medicaid, SNAP, WIC, and school lunch programs. Exploiting variation in SNAP eligibility across states and over time, I find strong evidence of program interactions: when a state moves from the federal rule to the most extensive SNAP eligibility rule, enrollment in free school lunch and WIC increases by 4.1 and 7.9 percentage points, respectively. I estimate that the federal government spends an additional 74 cents on the school lunch program and WIC for each dollar spent on SNAP due to the expansion.