The registration requirements of section 851 of this title do not apply to any person—

(a) who has obtained knowledge of or received instruction or assignment in the espionage, counter-espionage, or sabotage service or tactics of a foreign government or foreign political party by reason of civilian, military, or police service or employment with the United States Government, the governments of the several States, their political subdivisions, the District of Columbia, the Territories, or the Canal Zone;

(b) who has obtained such knowledge solely by reason of academic or personal interest not under the supervision of or in preparation for service with the government of a foreign country or a foreign political party;

(c) who has made full disclosure of such knowledge, instruction, or assignment to officials within an agency of the United States Government having responsibilities in the field of intelligence, which disclosure has been made a matter of record in the files of such agency, and concerning whom a written determination has been made by the Attorney General or the Director of Central Intelligence that registration would not be in the interest of national security;

(d) whose knowledge of, or receipt of instruction or assignment in, the espionage, counterespionage, or sabotage service or tactics of a government of a foreign country or of a foreign political party, is a matter of record in the files of an agency of the United States Government having responsibilities in the field of intelligence and concerning whom a written determination is made by the Attorney General or the Director of Central Intelligence, based on all information available, that registration would not be in the interest of national security;

(e) who is a duly accredited diplomatic or consular officer of a foreign government, who is so recognized by the Department of State, while he is engaged exclusively in activities which are recognized by the Department of State as being within the scope of the functions of such officer, and any member of his immediate family who resides with him;

(f) who is an official of a foreign government recognized by the United States, whose name and status and the character of whose duties as such official are of record in the Department of State, and while he is engaged exclusively in activities which are recognized by the Department of State as being within the scope of the functions of such official, and any member of his immediate family who resides with him;

(g) who is a member of the staff of or employed by a duly accredited diplomatic or consular officer of a foreign government who is so recognized by the Department of State, and whose name and status and the character of whose duties as such member or employee are a matter of record in the Department of State, while he is engaged exclusively in the performance of activities recognized by the Department of State as being within the scope of the functions of such member or employee;

(h) Who ¹ is an officially acknowledged and sponsored representative of a foreign government and is in the United States on an official mission for the purpose of conferring or otherwise cooperating with United States intelligence or security personnel;

(i) who is a civilian or one of the military personnel of a foreign armed service coming to the United States pursuant to arrangements made under a mutual defense treaty or agreement, or who has been invited to the United States at the request of an agency of the United States Government; or

(j) who is a person designated by a foreign government to serve as its representative in or to an international organization in which the United States participates or is an officer or employee of such an organization or who is a member of the immediate family of, and resides with, such a representative, officer, or employee.