Uniform Title Memorandum of Understanding between the Government of the United States of America and the Government of the Republic of Bolivia Concerning the Imposition of Import Restrictions on Archaeological Material from the Pre-Colombian Cultures and Certain Ethnological Material from the Colonial and Republican Periods of Bolivia (2001 December 4). Protocols, etc., (2021 November 23) Title Cultural exchanges, property and cooperation : import restrictions : agreement between the United States of America and Bolivia, extending the Memorandum of Understanding of December 4, 2001, as amended and extended, effected by exchange of notes at La Paz, November 23 and 24, 2021; entered into force November 24, 2021, with effect from December 4, 2021.