Syllabus

NOTE: Where it is feasible, a syllabus (headnote) will be released, as is being done in connection with this case, at the time the opinion is issued. The syllabus constitutes no part of the opinion of the Court but has been prepared by the Reporter of Decisions for the convenience of the reader. See United States v. Detroit Timber & Lumber Co., 200 U. S. 321, 337.

SUPREME COURT OF THE UNITED STATES

Syllabus

UNITED STATES v. WASHINGTON ET AL. CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT

No. 21–404. Argued April 18, 2022—Decided June 21, 2022 In 2018, Washington enacted a workers’ compensation law that applied only to certain workers at a federal facility in the State who were “en- gaged in the performance of work, either directly or indirectly, for the United States.” Wash. Rev. Code §51.32.187(1)(b). The facility, known as the Hanford site, was once used by the Federal Government to de- velop and produce nuclear weapons, and is now undergoing a complex decontamination process. Most