50 U.S.C. 1844: Authorization during time of warText contains those laws in effect through Public Law 119-120 (October 7, 2026).
From Title 50-WAR AND NATIONAL DEFENSECHAPTER 36-FOREIGN INTELLIGENCE SURVEILLANCE
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§1844. Authorization during time of war
Notwithstanding any other provision of law, the President, through the Attorney General, may authorize the use of a pen register or trap and trace device without a court order under this subchapter to acquire foreign intelligence information for a period not to exceed 15 calendar days following a declaration of war by Congress.
( Pub. L. 95–511, title IV, § 404 , as added Pub. L. 105–272, title VI, § 601(2) , Oct. 20, 1998 , 112 Stat. 2408 .)
