Mich. Comp. Laws § 791.268a

Sec. 68a. (1) Except as otherwise provided in subsection (2), a prisoner may be permitted to receive visits from a minor brother, sister, stepbrother, stepsister, half brother, or half sister if that minor is on the prisoner's approved visitor list. (2) Notwithstanding subsection (1), the department may do any of the following: (a) Place limits on visiting hours, establish reasonable rules of conduct, and establish uniform quotas at each institution for visits to prisoners to promote order and security in the institutions and to prevent interference with institutional routine or disruption of a prisoner's programming. (b) Establish requirements for who must accompany the minor on the visit. (c) Deny, restrict, or terminate visits as determined necessary by the department for the order and security of the institution. (3) As used in this section, "minor" means a person who is less than 18 years of age.