Hain Celestial Group, Inc. v. Palmquist
The Court holds that a district court's erroneous dismissal of a nondiverse party does not cure a diversity-jurisdiction defect that existed at the time a case was removed to federal court. Because the defect therefore lingered through judgment uncured, the Fifth Circuit correctly vacated the District Court's judgment in Hain's favor — a district court cannot manufacture jurisdiction through its own mistake.
Case background
Respondents Sarah and Grant Palmquist fed their child, E. P., baby food made by petitioner Hain Celestial Group, Inc., and purchased from petitioner Whole Foods Market, Inc. When E. P. was 2½ years old, he began exhibiting serious developmental disorders and was diagnosed with conditions that some doctors attributed to heavy-metal poisoning. After a 2021 congressional staff report found that certain baby foods, including Hain’s, contained elevated levels of toxic heavy metals, the Palmquists sued both Hain and Whole Foods in Texas state court, raising state-law product-liability and negligence claims against Hain and breach-of-warranty and negligence claims against Whole Foods. Hain, a Delaware corporation with its principal place of business in New York, removed the case to federal court based on diversity of citizenship — but Whole Foods and the Palmquists were all Texas citizens, so the parties were not completely diverse. Hain argued that Whole Foods had been improperly joined and should be dismissed; the District Court agreed, dismissed Whole Foods, denied the Palmquists’ motion to remand, and ultimately granted Hain judgment as a matter of law. On appeal, the Fifth Circuit reversed the improper-joinder decision, concluded that restoring Whole Foods destroyed complete diversity, vacated the judgment, and ordered the case remanded to state court. This Court granted certiorari to resolve a divide among the Courts of Appeals over whether vacatur is required in these circumstances.
Questions Presented
(1) Whether a district court’s final judgment as to completely diverse parties must be vacated when an appellate court later determines that it erred by dismissing a non-diverse party at the time of removal.
(2) Whether a plaintiff may defeat diversity jurisdiction after removal by amending the complaint to add factual allegations that state a colorable claim against a nondiverse party when the complaint at the time of removal did not state such a claim.
Holding
Because the District Court’s erroneous dismissal of Whole Foods did not cure the jurisdictional defect that existed when the case was removed to federal court, the Fifth Circuit correctly vacated the judgment in Hain’s favor. Federal courts are courts of limited jurisdiction, and a judgment generally must be vacated when the district court lacked jurisdiction over the case at the time it was filed or removed. A district court may avoid that result by curing a jurisdictional defect before final judgment — as in Caterpillar Inc. v. Lewis, where a nondiverse party was fully and properly dismissed with all parties’ consent before trial. But Whole Foods’s dismissal was both erroneous and interlocutory, so when the Fifth Circuit reversed it the dismissal merged into the final judgment and was undone, restoring Whole Foods and destroying complete diversity. A district court cannot create jurisdiction through its own mistakes, and considerations of efficiency cannot save a judgment entered without jurisdiction. Nor may Whole Foods be dropped now under Federal Rule of Civil Procedure 21: unlike in Newman-Green, Inc. v. Alfonzo-Larrain, where the plaintiff sought the dismissal, here a defendant seeks to dismiss a nondiverse defendant over the plaintiffs’ objection, overriding the Palmquists’ right as masters of their complaint to choose a state forum.
The Court
Justice Sotomayor delivered the opinion for a unanimous Court. Justice Thomas, who joined the Court’s opinion in full, filed a concurring opinion.
What this episode contains
This episode is an AI-narrated reading of the majority opinion in Hain Celestial Group, Inc. v. Palmquist, written by Justice Sotomayor.
AI disclosure: The voice in this episode is AI-generated, using a machine learning model styled to loosely resemble the authoring justice. Tone, inflection, pacing, and emphasis are artifacts of the model and should not be attributed to Justice Sotomayor. The text being read is the Court’s published majority opinion, lightly adapted to improve readability for the spoken format.