Jurisdiction, Federal Supplemental Jurisdiction, Voluntary Amendment Eliminating Federal Claim, 5, 1
When the district court has federal question jurisdiction due to a federal claim alleged in the complaint, a voluntary amendment by the plaintiff which deletes the federal claim also deprives the district court of federal question jurisdiction and therefore also of supplementary jurisdiction over any state law claims under 28 USC 1367. This is true of cases initially filed in federal court by the plaintiff (Rockwell Int’l Corp. v. United States (2007) 549 U. S. 457, 473-474) as well as those, like this one, which a defendant as removed to federal court.