Cameron v. EMW Women's Surgical Center, P. S. C.
The Supreme Court ruled that the Kentucky attorney general had the right to rejoin a federal appeals proceeding to defend a state abortion regulation after the state's health secretary decided to abandon the legal fight.
The decision clarifies that a state attorney general can intervene in a pending federal appeal to defend state law when another official stops doing so—as long as he moves promptly once the need arises—reinforcing the principle that states should have a meaningful opportunity to defend their own laws in federal court.
How it got here: A federal district court struck down Kentucky's abortion law; the Sixth Circuit affirmed; after the health secretary stopped defending the law, the attorney general moved to intervene; the Sixth Circuit denied it; the Supreme Court agreed to hear only the intervention question.
The Case in Depth
What happened
Kentucky enacted House Bill 454, a law restricting a specific abortion procedure known as dilation and evacuation. An abortion clinic and two doctors sued to block the law, naming the state's attorney general and health secretary as defendants. The then-attorney general was dismissed from the case after saying he had no role enforcing the law. The health secretary alone defended HB 454 through trial and the initial appeal—and lost at both stages.
The question before the Court
After a Kentucky attorney general was dismissed from a federal lawsuit over a state abortion law, could he later step back into the case at the appeals stage when the remaining state official decided to stop defending the law?
The Court's answer
Yes — the Sixth Circuit should have allowed the newly elected Kentucky attorney general to intervene and continue defending the state abortion law after the health secretary chose not to seek further review.
The Court found no jurisdictional rule and no mandatory procedural rule blocked the motion. When the attorney general was dismissed from the case early on, his agreement expressly preserved "all rights, claims, and defenses in any appeals arising out of this action," keeping the door open for intervention. Applying the principles that govern intervention motions in trial courts as the closest available guide, the Court found every relevant factor favored the attorney general: Kentucky has a strong sovereign interest in defending its own laws; the motion was filed just two days after the secretary announced he would stop defending the law—well within the standard deadline for requesting a rehearing; and allowing intervention would not have legally harmed the clinic and doctors, since their hope that the case would simply end was not a recognized legal interest.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
State attorneys general across the country may now have a firmer legal basis to step into federal appeals and defend state laws when other state officials choose to drop the defense—especially after a change in administration. Litigants who win in a lower court can no longer count on that victory becoming final simply because one state official decides not to appeal.
What changes now
The case is sent back to the Sixth Circuit to allow the Kentucky attorney general to intervene and pursue further review of the lower courts' ruling that HB 454 is unconstitutional. The Supreme Court did not decide the merits of the abortion law itself—that question remains open. The attorney general may now seek en banc reconsideration or petition the Supreme Court for review on the constitutionality of HB 454.
What this does not decide
The Court explicitly did not decide whether Kentucky's abortion law is constitutional. It also declined to set any general rule about non-parties' rights to appeal or to seek appellate intervention outside the specific circumstances here, and it did not address whether estoppel principles might bar intervention in other cases.
Concurrences and dissents
Concurrence — Justice Thomas
Justice Thomas joined the majority but wrote separately to add a second reason why the jurisdictional argument fails: the attorney general was not a 'party' to the district court's judgment after being dismissed, so the appellate rules requiring parties to file timely notices of appeal never applied to him at all. He also criticized the Court's 2002 decision in Devlin v. Scardelletti—which had treated certain non-parties as 'parties' based on being bound by a judgment—as wrongly decided and worthy of overruling in a future case, though he found it inapplicable here because this case does not involve a class action.
Concurrence — Justice Kagan
Justice Kagan agreed that the Sixth Circuit should have allowed the intervention but framed the threshold issue differently. Rather than calling it a 'claims-processing rule,' she focused on the anti-circumvention principle: courts should not let parties use intervention to dodge appellate deadlines. She found that principle inapplicable here because the attorney general had no reason to appeal while the secretary was actively defending the law—the need to intervene arose only after the secretary stopped. She also objected to the majority's reliance on constitutional reasoning about state sovereignty, arguing that ordinary intervention-motion principles resolved the case without invoking the Constitution.
Dissent — Justice Sotomayor
Justice Sotomayor argued the Sixth Circuit did not abuse its discretion. The attorney general had secured his own early dismissal by representing he had no enforcement role under the law—then sought to re-enter years later on grounds directly contradicting that representation. Standard estoppel principles should have bound him to his prior position, she argued, and the court's broad discretion over late intervention requests should be respected. She warned the decision creates a roadmap for officials to sit out inconvenient litigation and re-enter only after receiving unfavorable rulings.
How the Court got there
The legal reasoning, step by step
- The Court first asked whether any jurisdictional rule prevented the Sixth Circuit from even hearing the intervention motion. No statute or rule deprives a court of appeals of jurisdiction over a non-party's motion to intervene, and the Court refused to read an implicit bar into the notice-of-appeal rules (28 U.S.C. §2107 and Appellate Rules 3 and 4), which address only parties filing notices of appeal—not non-parties seeking to join an ongoing appeal.
- The Court also declined to create a blanket procedural rule barring the motion. Because the attorney general had specifically preserved 'all rights, claims, and defenses in any appeals arising out of this action' when he agreed to dismissal, the terms of his own agreement kept the door open for intervention. His motion was therefore not an attempt to sidestep any deadline he had missed.
- With procedural obstacles cleared, the Court turned to whether the Sixth Circuit correctly denied the motion on the merits. No appellate rule specifically governs intervention on appeal, so the Court looked to the policies underlying Federal Rule of Civil Procedure 24—the trial-court intervention rule—as the closest available guide, focusing especially on the legal interest the attorney general sought to protect.
- The Court found the attorney general's interest especially strong because states have a sovereign interest in defending their own laws, and Kentucky's attorney general is the state's 'chief law officer' with independent constitutional authority and concurrent power to represent the Commonwealth in court. The Sixth Circuit abused its discretion—meaning it made a legal error, not merely a different judgment call—by failing to weigh that interest when the secretary stepped aside.
- On timeliness, the Court applied the rule from United Airlines v. McDonald (1977): a motion to intervene is timely when filed as soon as the movant learns that the existing parties will no longer protect its interests. Here, the attorney general moved just two days after learning the secretary would seek no further review—within the 14-day window for requesting en banc rehearing—so the motion was timely even though the litigation had stretched on for years.
- The Court rejected the Sixth Circuit's finding of prejudice to the clinic and doctors. Their expectation that the case would end because the new governor had a history of not defending abortion restrictions was not a legally cognizable interest, and the fact that the attorney general's rehearing petition raised a new argument (on third-party standing) did not require the court to actually address that issue—so no unfair prejudice resulted from allowing the intervention.
Doctrinal impact
Cases affected by this decision
Distinguishes NAACP v. New York (413 U. S. 345)
That case's timeliness ruling did not apply here because circumstances were materially different and there was no comparable disruption risk.
Reaffirms United Airlines, Inc. v. McDonald (432 U. S. 385)
Reaffirmed that an intervention motion is timely when filed as soon as the movant's interests would no longer be protected by existing parties.