; (7) $20,000,000 shall be made available for new incremental voucher assistance through the family unification program as authorized by section 8(x) of the Act: Provided , That the assistance made available under this paragraph shall continue to remain available for family unification upon turnover: Provided further , That for any public housing agency administering voucher assistance appropriated in a prior Act under the family unification program that determines that it no longer has an identified need for such assistance upon turnover, such agency shall notify the Secretary, and the Secretary shall recapture such assistance from the agency and reallocate it to any other public housing agency or agencies based on need for voucher assistance in connection with such program