NSA Secretly Helped Convict Defendants in U.S. Courts, Classified Documents Reveal

Civil liberties advocates have long suspected that the Justice Department is underreporting Section 702 cases in order to limit court challenges to the controversial law. Some theorize that the government conceals Section 702 use through a process known as “parallel construction,” in which evidence obtained from the warrantless surveillance authority is reobtained through traditional FISA authorization, and the government only discloses the latter authority in U.S. District Court.