Cite as: 595 U. S. ____ (2022) 1 Opinion of the Court NOTICE: This opinion is subject to formal revision before publication in the preliminary print of the United States Reports. Readers are requested to notify the Reporter of Decisions, Supreme Court of the United States, Washington, D. C. 20543, of any typographical or other formal errors, in order that corrections may be made before the preliminary print goes to press. SUPREME COURT OF THE UNITED STATES _________________ No. 20–828 _________________ FEDERAL BUREAU OF INVESTIGATION, ET AL., PETITIONERS v. YASSIR FAZAGA, ET AL. ON WRIT OF CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT [March 4, 2022] JUSTICE ALITO delivered the opinion of the Court. In this case, we consider the relationship between the longstanding “state secrets” privilege and a provision of the Foreign Intelligence Surveillance Act of 1978 (FISA), 92 Stat. 1783, 50 U. S. C. §1801 et seq., that provides a procedure under which a trial-level court or other authority may consider the legality of electronic surveillance conducted under FISA and may thereafter order specified forms of relief. See §1806(f ). This case was brought in federal court by three Muslim residents of Southern California who allege that the Federal Bureau of Investigation illegally surveilled them and others under FISA because of their religion. In response, the defendants (hereinafter Government) invoked the state secrets privilege and asked the District Court to dismiss most of respondents’ claims because the disclosure of counter-intelligence information that was vital to an evaluation of those claims would threaten national-security interests. The District Court agreed with the Government’s argument and dismissed the claims in question, but the Ninth Circuit reversed, reasoning that §1806(f ) “displaced” the state secrets privilege. We now hold that §1806(f ) has no