38 C.F.R. § 50.1
(b) Indirect Federal financial assistance or Federal financial assistance provided indirectly means financial assistance received by a service provider when the service provider is paid for services by means of a voucher, certificate, or other means of government-funded payment provided to a beneficiary who is able to make a choice of a service provider. Federal financial assistance provided to an organization is considered “indirect” within the meaning of the Establishment Clause of the First Amendment to the U.S. Constitution when—