American Civil Liberties Union v. National Security Agency, 493 F.3d 644 (6th Cir. 2007), is a case decided July 6, 2007, in which the United States Court of Appeals for the Sixth Circuit held that the plaintiffs in the case did not have standing to bring the suit against the National Security Agency (NSA), because they could not present evidence that they were the targets of the so-called "Terrorist Surveillance Program" (TSP).