22 U.S. Code § 2026 - Termination of authority and participation in Agency
In the event of an amendment to the Statute of the Agency being adopted in accordance with article XVIII–C of the Statute to which the Senate by formal vote shall refuse its advice and consent, upon notification by the Senate to the President of such refusal to advise and consent, all further authority under section  2021, 2022, 2023 and 2024 of this title, as amended, shall terminate:
 So in original. Probably should be “sections”.
Article XVIII–C of the Statute, referred to in text, provides: “C. Amendments 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 the 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.”.