Ninth Circuit upholds COVID-19 vaccine mandate against § 1983 and 14th Amendment challenges: Curtis v. Inslee

In Curtis v. Inslee (9th Cir. 2025) 154 F.4th 678, the Court of Appeals for the Ninth Circuit held that federal statutes governing investigational drugs do not create a private right of action enforceable under 42 U.S.C. § 1983 and that COVID-19 vaccine mandates do not violate the 14th Amendment’s Due Process Clause.

Plaintiffs were terminated by PeaceHealth in August 2021 for refusing to comply with its COVID-19 vaccination policy. They sued PeaceHealth and Washington Governor Inslee under 42 U.S.C. § 1983, arguing the available vaccine was an “investigational drug,” violating their rights under the 14th Amendment and other statutes. The district court dismissed all claims against the Governor, dismissed all federal claims against PeaceHealth, denied leave to amend, and declined supplemental jurisdiction over the state claims. Plaintiffs appealed.

The Ninth Circuit affirmed the dismissal. It found that none of Plaintiffs’ claims alleged a “specific and definite right enforceable… under § 1983.” The court held that 21 U.S.C. § 360bbb-3 (Food, Drug, and Cosmetic Act), the Public Readiness and Emergency Preparedness Act (2 U.S.C. § 247d-6), 10 U.S.C. § 980, and 45 C.F.R. Part 46 are not enforceable by a private right of action. It also rejected the argument that the COVID-19 Vaccination Program Provider Agreement created enforceable rights, finding no private enforcement mechanism.

Regarding the 14th Amendment Due Process Clause, the Ninth Circuit found “no material distinction” between refusing a vaccine and an “investigational drug that is clinically identical.” Following Jacobson v. Massachusetts (1905) 197 U.S. 11, it held that public health concerns justified the terminations, defeating the substantive due process claim. The procedural due process claim failed because Plaintiffs’ at-will employment was not a “constitutionally protected property interest.” The Equal Protection Clause claim failed because the state’s action “easily survives” rational basis review. The Ninth Circuit also held that the district court correctly determined that amending the federal claims would be futile. Finally, the court affirmed the dismissal of state law claims against the Governor and the district court’s discretion to decline supplemental jurisdiction.

Full opinion

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