Uniform Title Memorandum of Understanding between the Government of the United States of America and the Government of Libya Concerning the Imposition of Import Restrictions on Categories of Archaeological and Ethnological Material of Libya (2018 February 23). Protocols, etc. (2022 December 20) Title Cultural exchanges, property and cooperation : import restrictions : agreement between the United States of America and Libya extending the Memorandum of Understanding of February 23, 2018, effected by exchange of notes at Tunis and Tripoli December 20, 2022 and January 8, 2023 ; entered into force January 8, 2023 with effect from February 23, 2023.