In accordance with article XVIII.C of the Statute, “[a]mendments shall come into force for all members when (i) approved by the General Conference by a two-thirds majority of those present and voting after consideration of observations submitted by the Board of Governors on each proposed amendment, and (ii) accepted by two-thirds of all members in accordance with their respective constitutional processes. Acceptance by a member shall be effected by the deposit of an instrument of acceptance with the depositary Government referred to in paragraph C of article XXI [USA].”