§ 624.
(b)
Computation and method of payment
The method of computing and making payments under this section shall be as follows:
(1)
The Secretary shall, prior to the beginning of each period for which a payment is to be made, estimate the amount to be paid to the State for such period under the provisions of this section.
(2)
From the allotment available therefor, the Secretary shall pay the amount so estimated, reduced or increased, as the case may be, by any sum (not previously adjusted under this section) by which he finds that his estimate of the amount to be paid the State for any prior period under this section was greater or less than the amount which should have been paid to the State for such prior period under this section.
([Aug. 14, 1935, ch. 531], title IV, § 424, formerly § 423, as added [Pub. L. 90–248, title II, § 240(c)], Jan. 2, 1968, [81 Stat. 913]; amended [Pub. L. 94–273, § 22], Apr. 21, 1976, [90 Stat. 379]; [Pub. L. 96–272, title I, § 103(a)], June 17, 1980, [94 Stat. 518]; [Pub. L. 103–66, title XIII, § 13711(b)(2)], Aug. 10, 1993, [107 Stat. 655]; [Pub. L. 103–432, title II, § 202(d)(1)], Oct. 31, 1994, [108 Stat. 4454]; renumbered § 424 and amended [Pub. L. 109–288], §§ 6(b)(2), (e)(1), (2)(A), 7(b), 11(a)(2), Sept. 28, 2006, [120 Stat. 1244], 1246–1248, 1255; [Pub. L. 112–34, title I, § 101(c)], Sept. 30, 2011, [125 Stat. 370].)