Fund under section 2207 the maintenance of effort payment applicable to such State and plan year under subsection (b). The Secretary shall extend such a waiver (including the availability of Federal financial participation under such waiver) for such period as may be required for a State to meet the requirement of the previous sentence. (b) Maintenance of effort payments For purposes of this section, a maintenance of effort payment with respect to a State and plan year is— (1) for plan year 2028 and a State, a payment in an amount equal to the total amount of expenditures of the State for medical assistance under title XIX and child health assistance under title XXI including administrative costs for the plan year before the date of the enactment of this title