Funds which become available under the Presidential Election Campaign Fund Act of 1966 [
section 6096 of this title and sections 971 to 973 of former Title 31, Money and Finance] shall be appropriated and disbursed only after the adoption by law of guidelines governing their distribution. Section 6096 of the Internal Revenue Code of 1986 [formerly I.R.C. 1954] shall become applicable only after the adoption by law of such guidelines.