24 C.F.R. § 5.500
(a) Covered programs/assistance. This subpart E implements Section 214 of the Housing and Community Development Act of 1980, as amended (42 U.S.C. 1436a). Section 214 prohibits HUD from making financial assistance available to persons who are not in eligible status with respect to citizenship or noncitizen immigration status. This subpart E is applicable to financial assistance provided under:
(4) The United States Housing Act of 1937 (42 U.S. C. 1437 et seq.) which covers: