; and (B) any notifications submitted pursuant to paragraph (3). (f) Rule of construction Nothing in this section shall authorize an acquisition otherwise prohibited by this title, the Foreign Intelligence Surveillance Act of 1978 ( 50 U.S.C. 1801 et seq. ), or title 18, United States Code. 305. Prohibition on the warrantless acquisition of domestic communications (a) In general No officer or employee of the United States may intentionally acquire pursuant to Executive Order 12333 ( 50 U.S.C. 3001 note; relating to United States intelligence activities), or successor order, any communication as to which the sender and all intended recipients are known to be located in the United States at the time of acquisition or the time of communication except— (1) as authorized under section 105 or 304 the Foreign Intelligence Surveillance Act of 1978 (50 U.S.C. 1805 and 1824); or (2) if— (A) there is a reasonable belief that— (i) an emergency exists involving the imminent threat of death or serious bodily harm; and (ii) in order to prevent or mitigate this threat, the acquisition must be conducted before an authorization pursuant to the provisions of law cited in paragraph (1) can, with due diligence, be obtained