28 CFR 551.12 - Eligibility to marry.
An inmate's request to marry shall be approved provided:
(a) The inmate is legally eligible to marry;
(b) The inmate is mentally competent;
(c) The intended spouse has verified, ordinarily in writing, an intention to marry the inmate; and
(d) The marriage poses no threat to institution security or good order, or to the protection of the public.