Should states have greater authority to enforce federal immigration laws independently?

Background

Whether states should have greater authority to enforce federal immigration laws is one of the most actively contested questions in American governance today. Under the U.S. Constitution, the federal government holds primary authority over immigration, a principle affirmed in the Supreme Court's 2012 ruling in Arizona v. United States. However, that boundary is being tested on multiple fronts. Texas's Senate Bill 4, which creates a state crime for illegal border crossing and empowers state officers to arrest and detain suspects, was allowed to take effect by the Fifth Circuit Court of Appeals in April 2026 after years of legal challenges. Meanwhile, the Laken Riley Act, signed in January 2025 with bipartisan support, grants state attorneys general standing to sue the federal government over immigration enforcement decisions. According to the Migration Policy Institute, more than 8,500 state and local officers had been trained under 287(g) agreements by late 2025 to assist federal immigration enforcement. At the same time, states like California, Illinois, and New York have moved in the opposite direction, enacting laws that restrict local cooperation with federal immigration agents.

Supporters of greater state enforcement authority argue that when the federal government fails to adequately secure borders or enforce immigration laws, states must have the tools to protect their residents. They point to laws like Texas's SB 4 as necessary measures that fill enforcement gaps and deter illegal crossings, and they view the Laken Riley Act's provisions as an important accountability mechanism. Opponents counter that a patchwork of state-level enforcement risks constitutional violations, disrupts foreign policy, and invites racial profiling. Research from the Brookings Institution found that 16 percent of foreign-born Latinos have avoided calling police for fear of being questioned about their status, while the American Bar Association has formally opposed the use of racial or ethnic profiling in immigration enforcement. Critics also warn that state enforcement undermines community trust in local police, making it harder to solve crimes.

The stakes of this debate extend well beyond immigration policy. The outcome will shape the constitutional balance between federal and state power, the civil liberties of citizens and noncitizens alike, and the practical functioning of local law enforcement across the country. According to NPR, red and blue states are moving further apart, with Republican-led states like Tennessee and Indiana mandating cooperation with federal agents while Democratic-led states expand sanctuary protections. Immigrant communities face heightened uncertainty, and industries such as agriculture and construction that depend on immigrant labor could see significant economic disruption. How this question is ultimately resolved in courts and legislatures will influence whether immigration enforcement remains a centralized federal function or becomes an increasingly state-driven enterprise with widely varying outcomes depending on where a person lives.