(5) (A) The amount of each allotment to a State for any fiscal year under this subsection shall be available to each State or grant recipient, which has a plan or application approved by the Chairperson in effect on the first day of such fiscal year, to pay not more than 50 per centum of the total cost of any project or production described in paragraph (1). The amount of any allotment made under paragraph (4) for any fiscal year— (i) which exceeds $125,000, but (ii) which does not exceed 20 per centum of such allotment, shall be available, at the discretion of the Chairperson, to pay up to 100 per centum of the cost of programs under this subsection if such programs would otherwise be unavailable to the residents of that State. (B) Any amount allotted to a State under the first sentence of paragraph (4) for any fiscal year which is not obligated by the State agency or grant recipient prior to sixty days prior to the end of the fiscal year for which such sums are appropriated shall be available to the Chairperson for making grants to regional groups. (C) Funds made available under this subsection shall not be used to supplant non-Federal funds. (D) For the purposes of this paragraph, the term “regional group” means any multistate group, whether or not representative of contiguous States. (E) For purposes of paragraph (4)(B), the term “State” and the term “grant recipient” include, in addition to the several States of the Union, only those special jurisdictions specified in section 952(g) of this title which have a population of 200,000 or more, according to the latest decennial census.