20 U.S.C. § 1066c: Limitations on Federal insurance for bonds issued by designated bonding authority

not more than $733,333,333 shall be used for loans to eligible institutions that are private historically Black colleges and universities; and not more than $366,666,667 shall be used for loans to eligible institutions which are historically Black public colleges and universities. The authority of the Secretary to issue letters of credit and insurance under this part is effective only to the extent provided in advance by appropriations Acts. No loan may be made under this part for any educational program, activity or service related to sectarian instruction or religious worship or provided by a school or department of divinity or to an institution in which a substantial portion of its functions is subsumed in a religious mission. No loan may be made to an institution under this part if the institution discriminates on account of race, color, religion, national origin, sex (to the extent provided in title IX of the Education Amendments of 1972 [ 20 U.S.C. 1681 et seq.]), or disabling condition; except that the prohibition with respect to religion shall not apply to an institution which is controlled by or which is closely identified with the tenets of a particular religious organization if the application of this section would not be consistent with the religious tenets of such organization.