Unreported / Non-Citable
Background
The City and County of San Francisco and the State of California filed this action in San Francisco County Superior Court against Karen Po Kwan, alleging violations of state housing law, San Francisco health and housing codes, and public nuisance. Kwan removed the action to the U.S. District Court for the Northern District of California, asserting federal question jurisdiction. The case is now before the federal court on the court's own order to show cause regarding subject matter jurisdiction.
In her notice of removal, Kwan contended that the underlying state court action arose directly out of what she described as an unconstitutional, multi-agency operational sweep executing a predatory real estate equity-poaching scheme under color of law, violating her Fourth Amendment right against warrantless seizures and her Fourteenth Amendment right to procedural due process. The court noted that it was not clear she could assert these arguments as defenses to the plaintiffs' claims.
On October 15, 2026, the district court issued an order to show cause directing Kwan to explain in writing why the action should not be remanded to San Francisco County Superior Court for lack of subject matter jurisdiction. The order does not finally resolve jurisdiction; it instead sets a written response deadline of October 30, 2026, and leaves the remand question open pending Kwan's response.
The Court’s Holding
The court explained that federal courts are courts of limited jurisdiction that possess only the power authorized by Constitution and statute, and that the burden of establishing jurisdiction rests on the party asserting it. Under the well-pleaded complaint rule, federal question jurisdiction exists only when a federal question is presented on the face of the plaintiff's properly pleaded complaint, and because jurisdiction depends solely on the plaintiff's claims for relief rather than anticipated defenses, a case may not be removed to federal court on the basis of a federal defense.
Applying those principles, the court observed that the complaint alleges claims solely under state and local law—violations of the California Health and Safety Code, the San Francisco Building, Housing, Plumbing, and Health Codes, and public nuisance. Even if Kwan could assert her constitutional arguments as defenses, a case may not be removed on the basis of a federal defense, and as the master of the claim the plaintiff can generally avoid federal question jurisdiction by exclusive reliance on state law.
The court also noted that the complaint alleges the plaintiffs and Kwan are all citizens of California, indicating the court lacks diversity jurisdiction under 28 U.S.C. § 1332(a), which requires complete diversity and an amount in controversy exceeding $75,000. Accordingly, the court ordered Kwan to show cause in writing by October 30, 2026, why the action should not be remanded to state court for lack of subject matter jurisdiction.
Key Takeaways
- Federal question jurisdiction requires a federal question on the face of the plaintiff's properly pleaded complaint, not merely in anticipated defenses.
- A defendant cannot remove a case to federal court based solely on federal constitutional defenses to state law claims.
- A plaintiff who relies exclusively on state law can generally avoid federal question jurisdiction as the master of the claim.
- Diversity jurisdiction requires complete diversity of citizenship between all plaintiffs and all defendants plus an amount in controversy exceeding $75,000; here all parties are California citizens.
- The removing defendant bears the burden of establishing federal jurisdiction, and the court ordered Kwan to show cause in writing by October 30, 2026 why the case should not be remanded.
Why It Matters
This order reinforces the well-pleaded complaint rule and the principle that defendants cannot manufacture federal jurisdiction by raising federal defenses to state law claims. It demonstrates the court's gatekeeping role in policing the boundaries of federal subject matter jurisdiction at the removal stage.
The decision also illustrates the procedural mechanism of an order to show cause as a tool for courts to address potential jurisdictional defects before remanding a case to state court, giving the removing party a fair opportunity to articulate a valid basis for federal jurisdiction while preserving the presumption that a cause lies outside limited federal jurisdiction.