Minn. Stat. § 517.09
Subd. 1. General.
No particular form is required to solemnize a civil marriage, except: the parties shall declare in the presence of a person authorized to solemnize civil marriages and two attending witnesses that each takes the other as spouse; or the civil marriage shall be solemnized in a manner provided by section 517.18.
Subd. 2. Refusal to solemnize; protection of religious doctrine.
Each religious organization, association, or society has exclusive control over its own theological doctrine, policy, teachings, and beliefs regarding who may marry within that faith. A licensed or ordained member of the clergy or other person authorized by section 517.04 to solemnize a civil marriage is not subject to any fine, penalty, or civil liability for failing or refusing to solemnize a civil marriage for any reason.
Subd. 3. Refusal to participate or support solemnization; protection of religious belief.