Section 9-18-5
When supplementary agreements requiring expenditure of funds, etc., become effective.
Any supplementary agreement entered into pursuant to Article VI of the compact requiring the expenditure of funds or the assumption of an obligation to expend funds in addition to those already appropriated shall not become effective as to this state prior to the making of an appropriation by the Legislature therefor.
(Acts 1961, Ex. Sess., No. 52, p. 1909, §5.)