When the Archivist considers it to be in the public interest, he may exercise, with respect to papers, documents, or other historical materials deposited under this section, or otherwise, in a Presidential archival depository, all the functions and responsibilities otherwise vested in him pertaining to Federal records or other documentary materials in his custody or under his control. The Archivist, in negotiating for the deposit of Presidential historical materials, shall take steps to secure to the Government, as far as possible, the right to have continuous and permanent possession of the materials. Papers, documents, or other historical materials accepted and deposited under
section 2111 of this title and this section are subject to restrictions as to their availability and use stated in writing by the donors or depositors, including the restriction that they shall be kept in a Presidential archival depository. The restrictions shall be respected for the period stated, or until revoked or terminated by the donors or depositors or by persons legally qualified to act on their behalf. Subject to the restrictions, the Archivist may dispose by sale, exchange, or otherwise, of papers, documents, or other materials which the Archivist determines to have no permanent value or historical interest or to be surplus to the needs of a Presidential archival depository. Only the first two sentences of this subsection shall apply to Presidential records as defined in
section 2201(2) of this title.