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Background
Thirty years after the Personal Responsibility and Work Opportunity Reconciliation Act (PRWORA), the U.S. social safety net remains highly decentralized, with states exercising substantial discretion over policy design and implementation. Consistent with the 2026 APPAM theme, Fifty States, Fifty Systems, this study examines how state-level policy variation reflects distinct welfare regimes and how these differences shape child well-being. While prior research has documented variation in individual programs, less is known about how multiple programs operate collectively as state safety net regimes or how these configurations evolve over time and shape child health and economic well-being.
Methods
We develop a longitudinal state panel dataset (1994–2024) by merging the State Safety Net Policy, Kids Count, and National Welfare Data from the Kentucky Center for Poverty. We used model-based clustering across ten federal-state programs, including cash (e.g., TANF, UI, and SSI), near-cash (e.g., SNAP), and in-kind (e.g., CHIP and childcare subsidies), on two policy dimensions—generosity and inclusiveness—to identify distinct policy regimes. To examine change over time while keeping regime meanings consistent, we use the full-period cluster profiles as fixed anchors and classify each state-year according to the regime profile it most closely resembles. Three-regime solutions are primary, with four-regime solutions examined as sensitivity analyses. We then estimate correlated random-effects within–between hybrid models with year fixed effects. Models adjust for lagged unemployment, gross state product, population, and racial composition.
Results
Preliminary findings reveal that state safety net regimes are both distinct and moderately stable over the past three decades, indicating persistent institutional patterns in how states structure support for low-income families. The three-cluster solution identifies an Inclusive regime characterized by greater benefit inclusiveness and generosity across most programs; a Reluctant regime marked by limited state investment but reliance on federally funded programs; and a Restrictive regime characterized by moderate generosity and limited coverage alongside strong behavioral enforcement.
In primary three-regime hybrid models, both within- and between-state regime differences are associated with child well-being. Between states, the Reluctant regime is consistently associated with higher child mortality, low birth weight, poor child health, and poverty, relative to the inclusive regime. Differences for Restrictive regimes are similar or smaller. Additionally, within-state shifts from Inclusive toward Restrictive configurations are associated with higher subsequent child mortality, while shifts from Inclusive toward Reluctant configurations are also associated with poorer child health. Low birth weight and child poverty show little evidence of a within-state association. Four-regime models reveal more heterogeneity, but the three-regime solution remains the optimal, parsimonious specification.
Conclusion and Policy Implications
This study contributes to the literature by conceptualizing the U.S. safety net as a set of state-level policy regimes rather than as isolated programs, offering a more comprehensive framework for understanding variation in the American welfare state under federalism. As federal leadership recedes and state discretion expands, these findings underscore how policy design and poverty politics shape unequal access to social protection across states. Strengthening coordination, adequacy, and equity in safety net provision remains critical to reducing persistent geographic disparities in child well-being.