No import restrictions set forth in section 2606 of this title
may be applied under this section to the archaeological or ethnological materials of any State Party for more than five years after the date on which the request of a State Party under section 2602(a) of this title
is made to the United States. This period may be extended by the President for three more years if the President determines that the emergency condition continues to apply with respect to the archaeological or ethnological material. However, before taking such action, the President shall request and consider, if received within ninety days, a report of the Committee setting forth its recommendations, together with the reasons therefor, as to whether such import restrictions shall be extended.