Act agreements with the Indian Health Service for fiscal year 2021, such sums as may be necessary: Provided , That notwithstanding any other provision of law, no amounts made available under this heading shall be available for transfer to another budget account. Provided further , That amounts obligated but not expended by a tribe or tribal organization for contract support costs for such agreements for the current fiscal year shall be applied to contract support costs due for such agreements for subsequent fiscal years. Payment for Tribal Leases For payments to tribes and tribal organizations for leases pursuant to section 105(l) of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5324(l) ) for fiscal year 2021, such sums as may be necessary, which shall be available for obligation through September 30, 2022: Provided , That notwithstanding any other provision of law, no amount made available under this heading shall be available for transfer to another budget account. Indian health facilities For construction, repair, maintenance, improvement, and equipment of health and related auxiliary facilities, including quarters for personnel