Title 50 › CHAPTER 36 — FOREIGN INTELLIGENCE SURVEILLANCE › SUBCHAPTER I — ELECTRONIC SURVEILLANCE › § 1806
Limits how information from electronic surveillance of U.S. persons can be used and shared. Federal officers may only use or disclose that information under the privacy rules the law requires, and privileged communications keep their privilege. If the government wants to use the information for law enforcement, it must include a statement that using it in a criminal case needs prior approval from the Attorney General. Before using such information against someone in any federal proceeding, the government must tell the person affected and the court. State or local governments must tell the person, the court, and the Attorney General. A person whose communications were surveilled can ask a court to block (suppress) evidence if it was collected unlawfully or without proper authorization, and this request should be made before the trial unless they had no chance or did not know the reason. If the Attorney General swears that revealing records would harm national security, a federal district judge will review the surveillance papers in private without the other side. The judge may show parts of the papers to the affected person under strict protection only if needed to decide legality. If the judge finds the surveillance was unlawful, the judge must suppress the evidence; if lawful, the judge will deny the request except as due process requires. Such orders are final and binding unless reviewed by a U.S. court of appeals or the Supreme Court. If a surveillance device accidentally records a private U.S. communication that would have needed a warrant, the contents must be destroyed once noticed unless the Attorney General finds they show a threat of death or serious bodily harm. If emergency surveillance was used but later not approved, the judge must notify the named U.S. person(s) about the application, the time period, and whether information was collected. That notice can be delayed up to 90 days for good cause and may be waived later for further good cause. Federal intelligence officers may work with federal or state law enforcement to investigate or prevent major national security threats like attacks by foreign powers, sabotage, international terrorism, spread of weapons of mass destruction, or foreign spying; that coordination does not replace other required certifications or court orders.
Full Legal Text
War and National Defense, Source: USLM XML via OLRC
Legislative History
Reference
Citation
50 U.S.C. § 1806
Title 50, War and National Defense
Last Updated
Sep 23, 2026
Release point: 119-110