The Treaty of Amity, Economic Relations and Consular Rights between the United States and Iran was signed in Tehran on August 15, 1955, received the consent of the Senate on July 11, 1956[1] and entered into force on 16 June 1957.[2] The treaty is registered by the United States to the United Nations on 20 December 1957. The official texts are in English and Persian. It is sealed by plenipotentiaries Selden Chapin (U.S.) and Mostafa Samiy (Iran).[3]