Would you like to learn how to obtain your medical marijuana card in Warren, MI? If so, contact American Medicinal Marijuana Association. The American Medicinal Marijuana Association, Michigan Chapter is enthusiastically dedicated to providing Educational and Informational Services to medicinally Licensed Michigan Department of Community Health Patients and Caregivers in the State of Michigan, under the Michigan Medical Marihuana Act MCL 333.26421 Initiated Law 1, December 4th 2008.