Blocking property of certain persons contributing to the situation in Burundi : communication from the President of the United States transmitting a declaration of a national emergency with respect to the unusual and extraordinary threat to the national security and foreign policy of the United States posed by the situation in Burundi, pursuant to 50 U.S.C 1703(b); Public Law 95-223 Sec. 204 (b); (91 STAT. 1627).