The Archivist shall be responsible for the custody, use, and withdrawal of records transferred to him. When records, the use of which is subject to statutory limitations and restrictions, are so transferred, permissive and restrictive statutory provisions with respect to the examination and use of records applicable to the head of the agency from which the records were transferred or to employees of that agency are applicable to the Archivist and to the employees of the National Archives and Records Administration, respectively. Except as provided in subsection (b) of this section, when the head of a Federal agency states, in writing, restrictions that appear to him to be necessary or desirable in the public interest with respect to the use or examination of records being considered for transfer from his custody to the Archivist, the Archivist shall, if he concurs,,
impose such restrictions on the records so transferred, and may not relax or remove such restrictions without the written concurrence of the head of the agency from which the material was transferred, or of his successor in function, if any. In the event that a Federal agency is terminated and there is no successor in function, the Archivist is authorized to relax, remove, or impose restrictions on such agency’s records when he determines that such action is in the public interest. Statutory and other restrictions referred to in this subsection shall remain in force until the records have been in existence for thirty years unless the Archivist by order, having consulted with the head of the transferring Federal agency or his successor in function, determines, with respect to specific bodies of records, that for reasons consistent with standards established in relevant statutory law, such restrictions shall remain in force for a longer period. Restriction on the use or examination of records deposited with the National Archives of the United States imposed by section 3 of the National Archives Act, approved June 19, 1934
, shall continue in force regardless of the expiration of the tenure of office of the official who imposed them but may be removed or relaxed by the Archivist with the concurrence in writing of the head of the agency from which material was transferred or of his successor in function, if any.