Assistance Act may be served by any project funded under this heading to provide both transitional housing and rapid re-housing: Provided further, That for all matching funds requirements applicable to funds made available under this heading for this fiscal year and prior fiscal years, a grantee may use (or could have used) as a source of match funds other funds administered by the Secretary and other Federal agencies unless there is (or was) a specific statutory prohibition on any such use of any such funds: Provided further, That none of the funds made available under this heading shall be available to provide funding for new projects, except for projects created through reallocation, unless the Secretary determines that the continuum of care has demonstrated that projects are evaluated and ranked based on the degree to which they improve the continuum of care's system performance: Provided further, That any unobligated amounts remaining from funds made available under this heading in fiscal year 2012 and prior years for project-based rental assistance for rehabilitation projects with 10-year grant terms may be used for purposes under this heading, notwithstanding the purposes for which such funds were appropriated: Provided further, That unobligated balances, including recaptures and carryover, remaining from funds transferred to or appropriated under this heading in fiscal year 2019 or prior years, except for rental assistance amounts that were recaptured and made available until expended, shall be available for the current purposes authorized under this heading in addition to the purposes for which such funds originally were appropriated. Housing programs PROJECT-BASED RENTAL ASSISTANCE For activities and assistance for the provision of project-based subsidy contracts under the United States Housing Act of 1937 ( 42 U.S.C. 1437 et seq. ) ( the Act ), not otherwise provided for, $15,610,000,000, to remain available until expended, shall be available on October 1, 2023 (in addition to the $400,000,000