Title 50 › CHAPTER 36 — FOREIGN INTELLIGENCE SURVEILLANCE › SUBCHAPTER III — PEN REGISTERS AND TRAP AND TRACE DEVICES FOR FOREIGN INTELLIGENCE PURPOSES › § 1841
Defines key words used in this part of the law. The words foreign power; agent of a foreign power; international terrorism; foreign intelligence information; Attorney General; United States person; United States; person; and State mean what they mean in section 1801. Pen register and trap and trace device mean what section 3127 of title 18 says. An aggrieved person is someone whose phone line or other communication device was subject to a court-authorized pen register or trap-and-trace, including capturing incoming electronic signals. A specific selection term is an identifier that names a particular person, account, address, or device and is used to narrow the data sought as much as reasonably possible. It does not include identifiers that do not narrow the search, such as a provider name (unless the provider is the target) or broad geographic areas. Address means a physical or electronic address, like an email or temporary IP. Multiple identifiers may be used to meet the narrowing requirement.
Full Legal Text
War and National Defense, Source: USLM XML via OLRC
Legislative History
Reference
Citation
50 U.S.C. § 1841
Title 50, War and National Defense
Last Updated
Aug 21, 2026
Release point: 119-102