22 U.S.C. § 284n

(a) The United States Governor is authorized to agree on behalf of the United States to pay to the Association $2,400,000,000 as the United States contribution to the fifth replenishment of the Resources of the Association: Provided, however , That any commitment to make such contributions shall be made subject to obtaining the necessary appropriations. (b) In order to pay for the United States contribution provided for in this section, there are authorized to be appropriated, without fiscal year limitation, $2,400,000,000 for payment by the Secretary of the Treasury.