Case Info: Royal Canin U.S.A., Inc. v. Wullschleger | Case No. 23-677 | Date Argued: 10/7/24 | Date Decided: 1/15/25

Link to Docket: Here.

Questions Presented:

1. Whether such a post-removal amendment of the complaint defeats federal-question subject-matter jurisdiction.
2. Whether such a post-removal amendment of the complaint precludes a district court from exercising supplemental jurisdiction over the plaintiffs remaining state-law claims pursuant to 28 U.S.C. § 1367.

Holding: When a plaintiff amends her complaint to delete the federal-law claims that enabled removal to federal court, leaving only state-law claims behind, the federal court loses supplemental jurisdiction over the state claims, and the case must be remanded to state court.

Result: Affirmed.

Voting Breakdown: Justice Kagan delivered the opinion for a unanimous Court.

Link to Opinion: Here.

Oral Advocates:

• For petitioners: Katherine B. Wellington, Boston, Mass.
• For respondents: Ashley C. Keller, Chicago, Ill.

Website Link to Oral Argument: Here.

Apple Podcast Link to Oral Argument: Here.