REPEAL OF MARIHUANA PROHIBITION A Petition to amend the Michigan Constitution, Article 1, to add: Article 1 Section 28. Repeal of Marihuana Prohibition. For persons who are at least 18 years of age who are not incarcerated, marihuana acquisition, cultivation, manufacture, sale, delivery, transfer, transportation, possession, ingestion, presence in or on the body, religious, medical, industrial, agricultural, commercial or personal use, or possession or use of paraphernalia shall not be prohibited, abridged or penalized in any manner, nor subject to civil forfeiture; provided that no person shall be permitted to operate an aircraft, motor vehicle, motorboat, ORV, snowmobile, train, or other heavy or dangerous equipment or machinery while impaired by marihuana.