Prohibitions on surveilling United States citizens

(a) An officer of the United States must obtain a warrant issued using the procedures described in the Federal Rules of Criminal Procedure by a Federal court in order to conduct or request— (1) electronic surveillance of a United States citizen; (2) a physical search of a premises, information, material, or property used exclusively by, or under the open and exclusive control of, a United States citizen; (3) approval of the installation and use of a pen register or trap and trace device, a sole or significant purpose of which is to obtain foreign intelligence information concerning a United States citizen; (4) the production of tangible things (including books, records, papers, documents, and other items) concerning a United States citizen to obtain foreign intelligence information; or (5) the targeting of a United States citizen for the acquisition of foreign intelligence information. (b) Any information concerning a United States citizen acquired under Executive Order 12333 (50 U.S.C. 3001 note; relating to United States intelligence activities) shall not be used in evidence against that United States citizen in any criminal, civil, or administrative proceeding or as part of any criminal, civil, or administrative investigation.