Sanctuary Jurisdictions and Federal Immigration Enforcement Afterthe $70 Billion Appropriation: A Review of Federalism, Preemption,and Spending-Power Challenges. Journal of Advanced Multidisciplinary Studies (JAMS), [S. l.], v. 1, n. 1, p. Page 427–445, 2026. Disponível em: https://jamsjournal.org/JAMS/article/view/90. Acesso em: 21 sep. 2026.