Sovereign immunity: moving to dismiss a claim against the state

When the defendant is a state, a state agency, or an official sued in an official capacity, sovereign immunity is the threshold defense. The doctrine bars the suit entirely unless the plaintiff can identify a specific basis for proceeding — Ex parte Young, congressional abrogation, or state waiver. Without one of those exceptions, the case ends, regardless of the merits.

This guide walks through the doctrine as it operates in both federal and state court. The federal version is the Eleventh Amendment; the state version is the state's own sovereign immunity. The principles are similar but the doctrinal frameworks differ, and a motion that addresses both will succeed where one that focuses only on the Eleventh Amendment leaves a state-court fallback open.

Two immunities, one doctrine

Sovereign immunity rests on the principle that a sovereign cannot be sued without its consent. In the United States, that principle applies to the federal government, to the states, and (under varying frameworks) to Indian tribes and foreign governments.

For the states, the doctrine has two faces. In federal court, the Eleventh Amendment bars federal-court suits against a state, a state agency, or an official sued in official capacity for damages. In state court, the state's own sovereign immunity — typically established by the state constitution and modified by the state's tort-claims act — bars suits against the state and its agencies absent waiver.

A motion to dismiss on sovereign-immunity grounds usually has to address both. A plaintiff who loses on the Eleventh Amendment in federal court can refile in state court; a defendant that wants the case ended needs both doors closed.

Identifying the state as the defendant

The motion starts by identifying the defendant as a sovereign for immunity purposes. This is not always obvious. The state itself is plainly within the doctrine. A state agency, department, board, or commission usually is too, but the test is whether the entity is an "arm of the state." Mt. Healthy City School District Board of Education v. Doyle, 429 U.S. 274 (1977), set the basic framework: how the entity is funded, whether its judgments come from the state treasury, the state's control over its operations, the entity's enabling statute.

Officials sued in their official capacities are treated as suits against the state itself. Will v. Michigan Department of State Police, 491 U.S. 58 (1989), held that a state official sued in official capacity is not a "person" subject to suit under 42 U.S.C. § 1983 for damages. Officials sued in their individual capacities are not protected by sovereign immunity, though they may invoke qualified or absolute immunity separately.

Municipalities, counties, and most local governments are not protected by sovereign immunity in federal court. They are not arms of the state. Monell v. Department of Social Services, 436 U.S. 658 (1978), made municipal liability under § 1983 possible because municipalities are not shielded by the Eleventh Amendment.

The Eleventh Amendment in federal court

The Eleventh Amendment, as construed since Hans v. Louisiana, 134 U.S. 1 (1890), bars suits in federal court against a state, its agencies, and officials in their official capacity for damages. The bar is jurisdictional, though the Supreme Court has been inconsistent about whether it is strictly jurisdictional or sovereign in nature.

The bar applies regardless of whether the plaintiff is from the same state, a different state, a foreign country, or the United States itself (with one exception — the U.S. can sue a state without Eleventh Amendment problems). The bar applies to federal and state-law claims alike when brought in federal court.

Three exceptions allow the case to proceed: Ex parte Young (suits for prospective injunctive relief against an officer), congressional abrogation (a valid exercise of Section 5 of the Fourteenth Amendment), and state waiver (clear and unequivocal consent to suit).

State sovereign immunity in state court

In state court, the state's own sovereign immunity controls. Most states have established the doctrine by constitution and waived it in part by statute — the state's tort claims act, public-employee liability statute, or similar enactment.

A motion in state court should cite the state constitution's immunity provision (when one exists), the relevant tort-claims act, and the specific waiver provisions. The brief should explain why the plaintiff's claim does not fall within any waiver: the claim is not a tort, the plaintiff did not file the required notice of claim, the amount sought exceeds the cap, the claim is for damages of a type the statute excludes (punitive damages, emotional distress, etc.).

Most state tort-claims acts impose preconditions to suit: pre-suit notice within a short window, presentation of a claim to the state's claims board, exhaustion of administrative remedies. Failure to satisfy any precondition can support dismissal. The motion should walk the statute step by step and identify where the plaintiff failed.

Anticipating Ex parte Young

Ex parte Young, 209 U.S. 123 (1908), permits federal-court suits against state officials for prospective injunctive relief to enforce federal law. The fiction is that an official acting in violation of federal law is not acting for the state, so the suit is not really against the state.

The doctrine has three requirements: the defendant must be a state official sued in official capacity (not the state itself or a state agency); the relief sought must be prospective, not retroactive (no money damages, no compensation for past conduct); the alleged violation must be of federal law (state-law claims do not fit).

The motion should anticipate the plaintiff's Ex parte Young arguments and explain why they fail. If the plaintiff is seeking damages for past conduct, Ex parte Young does not apply. If the plaintiff has named the state itself or a state agency, not an individual official, Ex parte Young does not apply. If the underlying claim is state law, Pennhurst State School & Hospital v. Halderman, 465 U.S. 89 (1984), bars even prospective injunctive relief in federal court.

Anticipating abrogation

Congress can abrogate state sovereign immunity, but only when (1) Congress unequivocally expressed the intent to abrogate, and (2) Congress acted pursuant to a valid grant of constitutional authority. Seminole Tribe of Florida v. Florida, 517 U.S. 44 (1996), restricted abrogation to Section 5 of the Fourteenth Amendment.

The motion should anticipate abrogation arguments by identifying the statute under which the plaintiff sues and explaining why it is not a valid Section 5 abrogation. Title II of the ADA, the Family and Medical Leave Act, the Age Discrimination in Employment Act, the Patent Remedy Act — each has been litigated, with mixed results. The motion should cite the controlling Supreme Court case for the specific statute.

If the statute does abrogate (Title II of the ADA in certain applications, the FMLA's family-leave provision), the motion should focus on the other defenses available — the plaintiff failed to satisfy the statute's substantive requirements, the claim is not within the abrogated portion, the relief sought is not authorized.

Anticipating waiver

A state can waive sovereign immunity. Waivers must be clear and unequivocal; constructive waiver is generally not enough. College Savings Bank v. Florida Prepaid Postsecondary Education Expense Board, 527 U.S. 666 (1999).

The motion should check whether the state has consented to suit in the specific way the plaintiff has invoked. A state can waive immunity for federal claims, for state-law claims, for suit in federal court, for suit in state court, or for some combination. A state's general appearance in litigation can sometimes constitute waiver of the Eleventh Amendment defense for that specific litigation, so the motion should be raised early and the defense never abandoned.

State tort claims acts are partial waivers. They consent to suit for specific types of claims subject to specific procedural requirements. The motion should explain why the plaintiff has failed to fit within the waiver — wrong type of claim, no pre-suit notice, exceeded the cap, sued the wrong defendant.

Officer suits and the real party in interest

When the plaintiff has sued an individual official, the motion should ask whether the suit is really against the state. Will and its progeny treat official-capacity suits for damages as suits against the state, even when an individual is named.

The test is whether the real party in interest is the state. A judgment that would be paid from the state treasury runs to the state. A judgment that would constrain official future conduct in the official's exercise of state authority runs to the state. The official's identity is the form; the relief is the substance.

Individual-capacity suits against officials, by contrast, do not implicate sovereign immunity. They may implicate qualified immunity, but that is a different doctrine with a different test. The motion should be precise about which capacity the plaintiff has invoked and which defenses apply.

How to structure the brief

A sovereign-immunity motion has a natural structure.

Identify the defendant as a sovereign. The state, a state agency, or an officer in official capacity. Cite the controlling Mt. Healthy or state-specific test if the agency status is not obvious.

State the immunity. In federal court, the Eleventh Amendment and the doctrine derived from Hans. In state court, the state's constitutional immunity and the specific statutory framework. Explain that the bar is jurisdictional and dispositive.

Anticipate the three exceptions. Ex parte Young: not available because the relief sought is retroactive, the defendant is not an officer, or the claim is state law. Abrogation: not available because the statute is not a valid Section 5 enactment. Waiver: not available because the state has not consented to suit in this specific way.

If the suit is in state court, walk the state tort claims act in detail. Identify each precondition and each substantive limit the plaintiff has failed.

Close with the consequence. The court lacks jurisdiction. The case must be dismissed. No leave to amend can save it, because amendment cannot create consent the sovereign has not given.

The bottom line

Sovereign immunity is a structural defense. When properly raised, it ends the case without reaching the merits. The motion must identify the defendant as a sovereign, state the applicable immunity (Eleventh Amendment in federal court, the state's own immunity in state court), and methodically rule out the three exceptions — Ex parte Young, abrogation, and waiver. State tort-claims acts add a procedural layer that defendants in state court should leverage.

A motion that addresses all of these in order, anticipates the plaintiff's likely arguments, and cites both federal Supreme Court doctrine and the controlling state-law authority will be hard to defeat. When granted, the dismissal is structural and permanent.