50 U.S.C. § 1844
Section 1844 · Authorization during time of war
This is § 404 of the Foreign Intelligence Surveillance Act of 1978
Amended 1 time on record
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.