Background
California’s No Vigilantes Act requires non-uniformed law-enforcement officers operating in the state, including federal officers, to visibly display their agency and either a name or badge number while performing specified enforcement duties. The law contains several exceptions and a safe harbor tied to an agency’s adoption and public posting of an identification policy. A willful and knowing violation may be prosecuted as a misdemeanor.
The United States facially challenged provisions of that law and California’s separate No Secret Police Act under the Supremacy Clause. The district court denied preliminary relief against § 10 of the No Vigilantes Act, reasoning that the United States had not shown sufficient interference with federal law-enforcement operations. The United States appealed only that ruling; the Ninth Circuit had previously enjoined enforcement of § 10 pending the appeal.
The Court’s Holding
The Ninth Circuit reversed, holding that the United States was certain to succeed on its claim that § 10 violates the intergovernmental-immunity component of the Supremacy Clause. By dictating whether, how, and when federal officers must identify themselves while enforcing federal law, § 10 directly regulates the federal government’s performance of an inherently sovereign function. Because Congress had not authorized that state regulation, the provision could not be applied to the United States, federal agencies, or federal officers.
The panel rejected California’s argument that direct regulation violates intergovernmental immunity only when it substantially burdens federal operations. The degree of interference is irrelevant when a state directly regulates federal governmental activity, and there is no de minimis exception. Because § 10 exclusively regulates law-enforcement conduct, it was invalid in every relevant application to federal agencies and officers, satisfying the standard for the United States’ facial challenge.
The remaining preliminary-injunction factors also favored the United States. Enforcement of a law invalid under the Supremacy Clause would cause irreparable harm, while the balance of equities and public interest favored preventing the constitutional violation. The court remanded with instructions to enter a preliminary injunction barring California, its Governor, and its Attorney General from applying or enforcing § 10 against the United States, federal agencies, and federal officers.
Key Takeaways
- A state may not directly regulate how federal officers perform federal law-enforcement duties unless Congress clearly authorizes that regulation.
- Direct state regulation of federal governmental functions is barred regardless of whether the resulting burden is substantial or minimal.
- The injunction concerns only § 10 of the No Vigilantes Act and protects the United States, federal agencies, and federal officers from its application or enforcement.
Why It Matters
The decision reinforces a categorical distinction between state laws that directly control federal governmental conduct and laws regulating private contractors or generally applicable conduct. Courts need not measure the practical burden when a state law expressly dictates how federal officers perform an inherently governmental function.
The ruling also confirms that a facial pre-enforcement challenge can succeed when every relevant application of a statute to federal agencies and officers constitutes prohibited direct regulation under the Supremacy Clause.