Opinion Summary: Hain Celestial Group v. Palmquist
The High Court Report · SCOTUS Oral Arguments
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Show Notes
Hain Celestial Group, Inc. v. Palmquist | Date Decided: 2/24/26 | Oral Argument Date: 11/4/25 | Docket Link: Here
Overview
Today, the Supreme Court hears oral arguments in Hain Celestial Group versus Palmquist, a forum fight about when courts keep cases they never should have had. A Texas family sued two companies over their child's heavy metal poisoning from baby food—but after a federal court wrongly kicked out one defendant and ran a two-week trial, an appeals court said the case never belonged in federal court, forcing everyone back to square one.
Questions Presented:
- 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.
- 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 federal trial court wrongly dismissed Whole Foods Market, the federal courts lacked jurisdiction to hear the case.
Result: Affirmed.
Voting Breakdown: 9-0. Justice Sotomayor delivered the opinion for a unanimous Court. Justice Thomas filed a concurring opinion.
Link to Opinion: Here.
Oral Advocates:
- For Petitioner (Hain and Whole Foods): Sarah E. Harrington, Washington, D.C.
- For Respondent (Palmquist): Russell S. Post, Houston, Texas