Arizona v. United States

Arizona v. United States was a landmark Supreme Court case decided in 2012. The Court ruled against Arizona's immigration law, SB 1070, which aimed to enforce immigration control at the state level. The justices found that several provisions of the law conflicted with federal immigration law, emphasizing that the federal government has the exclusive authority to regulate immigration. The decision underscored the importance of federal supremacy in immigration matters, limiting states' ability to create their own laws affecting immigration enforcement. This case highlighted ongoing tensions between state and federal powers regarding immigration policy.