Mich. Comp. Laws § 37.231

Sec. 1. (1) This act shall be known and may be cited as the "breastfeeding antidiscrimination act". (2) As used in this act: (a) "Place of public accommodation" means a business, an educational institution, or a refreshment, entertainment, recreation, health, or transportation facility of any kind, whether licensed or not, whose goods, services, facilities, privileges, advantages, or accommodations are extended, offered, sold, or otherwise made available to the public. (b) "Public service" means a public facility, department, agency, board, or commission owned, operated, or managed by or on behalf of this state or a subdivision of this state, by a county, city, village, township, or independent or regional district in this state, or by a tax-exempt private agency established to provide service to the public, except that public service does not include a state or county correctional facility with respect to actions or decisions regarding an individual serving a sentence of imprisonment.