; or (B) due to the circumstances of a State requiring reductions in specific programs, including early childhood education, the State presents to the Secretaries a justification and demonstration why other programs could not be reduced and how early childhood programs in the State will not be disproportionately harmed by such State action. (i) Supplement not supplant Funds received under this section shall be used to supplement and not supplant other Federal, State, and local public funds expended on early childhood education programs in the State. (j) Appropriations There is authorized to be appropriated, and there is appropriated, to carry out this section, $8,000,000,000 for each of fiscal years 2018 through 2028. III Head Start extended duration 301. Extended duration (a) In general The Head Start Act is amended— (1) by redesignating section 657C ( 42 U.S.C. 9852c ) as section 657D; and (2) by inserting after section 657B ( 42 U.S.C. 9852b ) the following: 657C. Extended duration (a) In general The Secretary shall make grants to Head Start (including Early Head Start) agencies funded under this subchapter to enable such agencies— (1) to provide access to a full school year and a full school day of services; or (2) in the case of a migrant and seasonal Head Start agency, to provide access to additional service hours to ensure continuous Head Start services as determined by the Secretary. (b) Application (1) In General To be eligible to receive a grant under this section, a Head Start agency shall submit an application at such time and in such manner as the Secretary may require. Such application shall include— (A) evidence of— (i) the number and percentage of slots— (I) in the agency's Head Start center-based programs (that are not Early Head Start programs)— (aa) that are currently funded (as of the date of submission of the application); and (bb) in which services are provided for at least the equivalent of 1,020 hours per year