Introduction

State sovereign immunity is a fundamental legal doctrine rooted in the Eleventh Amendment to the U.S. Constitution. It generally bars private lawsuits against states in federal or state courts unless the state consents to be sued or an exception applies. In the context of immigration law—where federal authority is supreme but states increasingly seek to enforce or influence immigration policy—this doctrine creates significant barriers to civil litigation. Understanding how sovereign immunity operates in immigration cases is essential for attorneys, policy advocates, and anyone affected by state-imposed immigration enforcement measures.

Origins of State Sovereign Immunity

The modern doctrine of state sovereign immunity traces back to the ratification of the Eleventh Amendment in 1795, which was a direct response to the Supreme Court’s decision in Chisholm v. Georgia (1793). In Chisholm, the Court allowed a private citizen of South Carolina to sue the State of Georgia in federal court, provoking outrage among states. The Eleventh Amendment overturned that ruling by providing: “The Judicial power of the United States shall not be construed to extend to any suit in law or equity, commenced or prosecuted against one of the United States by Citizens of another State, or by Citizens or Subjects of any Foreign State.”

Over time, courts expanded the immunity beyond the amendment’s literal text. The seminal case Hans v. Louisiana (1890) held that the Eleventh Amendment prohibits suits against a state by its own citizens as well, effectively establishing a broad principle of state sovereign immunity. This principle rests on the idea that states, as sovereign entities, are not subject to private lawsuits without their consent. As a result, individuals seeking damages or injunctive relief against a state face a high jurisdictional hurdle.

The Eleventh Amendment in Modern Context

Today, the Eleventh Amendment operates as a jurisdictional bar that protects states from being sued in federal court for money damages or equitable relief. The immunity extends to state agencies and departments that are considered arms of the state. However, it does not extend to local governments (municipalities, counties, school boards) or to state officials in their personal capacity. The Supreme Court has consistently reaffirmed the broad sweep of state sovereign immunity, most notably in Alden v. Maine (1999), which held that the immunity applies even in state court when the lawsuit is based on federal law.

Despite its strength, sovereign immunity is not absolute. Congress can abrogate state immunity when it acts pursuant to its enforcement powers under Section 5 of the Fourteenth Amendment. Additionally, states may voluntarily waive immunity by consenting to suit, either through a general statute or by participating in a federal program that conditions funding on such waiver. A third major exception—the Ex parte Young doctrine—allows lawsuits against state officials in their official capacity when a plaintiff seeks prospective injunctive relief to stop an ongoing violation of federal law.

Intersection with Immigration Law

Immigration law is an area of exclusive federal power under the Constitution’s Naturalization Clause and the Supremacy Clause. The federal government sets visa categories, removal procedures, and enforcement priorities. Yet states have increasingly enacted laws that touch on immigration—from licensing requirements for employers to cooperation mandates for local law enforcement. When these state laws conflict with federal immigration policies, private litigants may attempt to challenge them in court. State sovereign immunity often becomes a central obstacle in such litigation.

Federal Preemption and State Immigration Laws

The doctrine of federal preemption is the primary tool for challenging state immigration laws. Under the Supremacy Clause, federal law overrides conflicting state law. Courts have invalidated several state statutes on preemption grounds, including Arizona’s SB 1070 and Texas’s SB 4. However, suing a state to enforce preemption directly against the state itself is complicated by sovereign immunity. While the United States can sue a state for preemption violations (the “United States vs. State” exception to sovereign immunity), private plaintiffs must often frame their claims against state officials rather than the state government itself.

This distinction matters for litigants. A private plaintiff cannot sue the State of Arizona or Texas for damages caused by an unconstitutional immigration law. Instead, they must seek an injunction against the state official responsible for enforcing the law—typically the governor, attorney general, or local law enforcement chief—by invoking the Ex parte Young exception. Even then, the Supreme Court has limited the scope of such relief to ongoing violations and has barred suits seeking retroactive damages.

Litigating Against State Officials (Ex parte Young Doctrine)

The Ex parte Young doctrine (1908) creates a fiction that a state official who enforces an unconstitutional law is stripped of the state’s sovereign immunity and may be sued for prospective injunctive relief. This doctrine is critical in immigration cases. For example, in Arizona v. United States (2012), the federal government sought and obtained an injunction against the enforcement of key provisions of SB 1070. Private plaintiffs also often use Ex parte Young to challenge state immigration enforcement policies, such as “show me your papers” laws or state detention agreements with Immigration and Customs Enforcement (ICE).

However, the doctrine has limits. The official must have some connection to enforcement of the challenged law. Moreover, sovereign immunity still bars all claims for monetary damages, meaning that a prevailing plaintiff cannot recover compensation from the state for past harm. This limitation forces many immigration-related civil suits to focus solely on stopping the offensive practice, leaving individual victims without a remedy for injuries already suffered.

Notable Cases

Arizona v. United States (2012)

The landmark Arizona v. United States decision involved a direct challenge by the federal government to four provisions of Arizona’s SB 1070. The Supreme Court upheld the central “show me your papers” provision but struck down three others on preemption grounds. The case was brought by the United States, not private parties, so sovereign immunity was not an issue between the sovereigns. However, subsequent private lawsuits against Arizona officials—seeking to block other enforcement aspects of SB 1070—relied on Ex parte Young to name the state attorney general and county sheriffs as defendants.

Texas SB4 Challenges

Texas’s SB 4 (2017) prohibits “sanctuary cities” and allows local law enforcement to inquire about immigration status. Private plaintiffs, including civil rights organizations, sued state officials under Ex parte Young. The U.S. Court of Appeals for the Fifth Circuit partially upheld an injunction against the law, demonstrating that private litigants can overcome sovereign immunity to obtain prospective relief. Yet the litigation also highlighted the difficulty of obtaining damages for individuals wrongfully detained under the law.

Kansas v. Garcia (2020)

In Kansas v. Garcia, the Supreme Court considered whether state identity-theft prosecutions of unauthorized workers were preempted by federal immigration law. Here the state (Kansas) was the plaintiff, so sovereign immunity did not apply. The case shows another dimension of state involvement in immigration—criminal enforcement—and the limits of federal preemption. For civil litigants, however, the lesson is that state law enforcement actions may themselves be immune from suit when pursued under color of state law.

Exceptions to Sovereign Immunity

Congressional Abrogation

Congress may override state sovereign immunity when it enacts legislation under Section 5 of the Fourteenth Amendment. For example, some federal civil rights statutes—like Section 1983 and Title VII—have been interpreted to abrogate state immunity in certain contexts. However, the Supreme Court has narrowed abrogation in recent decades, requiring a clear statement of congressional intent. In the immigration arena, Congress has not widely abrogated state immunity. Most federal immigration laws (such as the Immigration and Nationality Act) do not contain express waivers or abrogation provisions for private suits against states.

Suits Against State Officials (Ex parte Young)

As discussed, the Ex parte Young exception is the most frequently used pathway for private plaintiffs. It allows suits for declaratory and injunctive relief—but not damages—against state officials who are enforcing an allegedly unconstitutional state policy or who are violating federal law. In immigration cases, this includes challenging state laws that conflict with federal immigration priorities or that violate the right to due process.

Suits Against Local Governments

One important distinction: local government entities (cities, counties, towns) do not enjoy Eleventh Amendment sovereign immunity. They are considered political subdivisions of the state and can be sued under Monell v. Department of Social Services (1978) for constitutional violations caused by their official policies or customs. This means that plaintiffs challenging local immigration enforcement policies—such as a county sheriff’s agreement to hold detainees for ICE—may have a more straightforward path to relief. They can sue the municipality or county directly for damages and injunctive relief, without confronting Eleventh Amendment barriers. However, state-law immunities or other defenses may still apply.

Practical Implications for Civil Litigation

The interplay of state sovereign immunity and immigration law creates several strategic considerations for litigators:

  • Identify the correct defendant. If the goal is to stop an unconstitutional state law, name the state official responsible for enforcement (e.g., governor, attorney general, commissioner of public safety) rather than the state itself. This invokes Ex parte Young jurisdiction.
  • Seek only prospective relief. Do not request damages from the state, as these will be barred. Anticipate that a successful suit may prevent future harm but will not compensate past injuries.
  • Consider bringing claims against local governments. If the challenged policy involves a county or city directive, suing the local entity may allow for both injunctive relief and damages under Monell.
  • Evaluate federal versus state court. State sovereign immunity applies in both federal and state court for federal claims. However, state courts may have their own sovereign immunity rules for state-law claims, which can be broader or narrower than the federal standard.
  • Look for waivers. Some states have voluntarily consented to suit in specific contexts, such as employment discrimination or contracts. Review state statutes that might provide a waiver of immunity.
  • Coordinate with federal authorities. In meritorious cases, the United States may bring suit directly against the state—bypassing sovereign immunity entirely—to block a substantively unlawful state immigration law. Private litigants can sometimes draw attention to such violations to encourage DOJ involvement.

These tactical decisions can determine whether a case proceeds past the motion-to-dismiss stage or ends on immunity grounds. Immigration practitioners must become adept at navigating these procedural nuances.

Conclusion

State sovereign immunity remains a powerful shield for states against private lawsuits concerning immigration policy. While the Eleventh Amendment and its progeny protect states from damage awards, the Ex parte Young exception provides a crucial loophole for challenging ongoing constitutional or statutory violations. The doctrine forces litigants to carefully craft their lawsuits—naming the right defendants and seeking the proper remedies—in order to hold state actors accountable for immigration enforcement that oversteps federal limits. As states continue to test the boundaries of their authority in the immigration realm, the tension between sovereign immunity and access to justice will remain a central theme in civil litigation.

For further reading, see the Cornell Legal Information Institute’s overview of the Eleventh Amendment, the Supreme Court’s opinion in Arizona v. United States, and the DOJ’s challenge to Texas SB4.