Missouri's adoption of a constitutional amendment decriminalizing medical marijuana for state law purposes has presented numerous interstitial issues. This article examines one that Missouri's Department of Health and Senior Services ("DHSS") has attempted to address by regulation: residency requirements for qualifying patients. The current regulations add detail to the constitutional requirement that a qualifying patient be a "Missouri resident". They require that a patient must "reside  in Missouri and not claim resident privileges in another state or country". This article concludes this aspect of the regulations is of dubious tenability.
Royce de R. Barondes,
Missouri's Residency Restrictions for Medical Marijuana Use, 76 Journal of the Missouri Bar 112
Available at: https://scholarship.law.missouri.edu/facpubs/1013