6 C.F.R. § 19.5
An organization that receives financial assistance from DHS for a social service program shall not, in providing services or in outreach activities related to such services, favor or discriminate against a beneficiary of said program or activity on the basis of religion, a religious belief, a refusal to hold a religious belief, or a refusal to attend or participate in a religious practice. Organizations that favor or discriminate against a beneficiary will be subject to applicable sanctions and penalties, as established by the requirements of the particular DHS social service program or activity. However, an organization that participates in a program funded by indirect financial assistance need not modify its program activities to accommodate a beneficiary who chooses to expend the indirect aid on the organization's program.
6 C.F.R. §19.5