This summarizes state by state marijuana laws. The states that are not whited out represent the states that currently have medical marijuana laws enacted.

Medical marijuana: This state has medical marijuana laws enacted. Modern research suggests that cannabis is a valuable aid in the treatment of a wide range of clinical applications. These include pain relief, nausea, spasticity, glaucoma, and movement disorders. Marijuana is also a powerful appetite stimulant and emerging research suggests that marijuana's medicinal properties may protect the body against some types of malignant tumors, and are neuroprotective.

Conditional release: The state allows conditional release or alternative or diversion sentencing for people facing their first prosecutions. Usually, conditional release lets a person opt for probation rather than trial. After successfully completing probation, the individual's criminal record does not reflect the charge.

Mandatory minimum sentence: When someone is convicted of an offense punishable by a mandatory minimum sentence, the judge must sentence the defendant to the mandatory minimum sentence or to a higher sentence. The judge has no power to sentence the defendant to less time than the mandatory minimum. A prisoner serving an MMS for a federal offense and for most state offenses will not be eligible for parole. Even peaceful marijuana smokers sentenced to "life MMS" must serve a life sentence with no chance of parole.

Decriminalization: The state has decriminalized marijuana to some degree. Typically, decriminalization means no prison time or criminal record for first-time possession of a small amount for personal consumption. The conduct is treated like a minor traffic violation.

Hemp: This state has an active hemp industry. Hemp is a distinct variety of the plant species cannabis sativa L. that contains minimal (less than 1%) amounts of tetrahydrocannabinol (THC), the primary psychoactive ingredient in marijuana. Various parts of the plant can be utilized in the making of textiles, paper, paints, clothing, plastics, cosmetics, foodstuffs, insulation, animal feed, and other products.

Drugged driving: This state has a per "se" (scientific evidence) drugged driving law enacted. In their strictest form, these laws forbid drivers from operating a motor vehicle if they have any detectable level of an illicit drug or drug metabolite (i.e., compounds produced from chemical changes of a drug in the body, but not necessarily psychoactive themselves) present in their bodily fluids above a specific threshold.

Marijuana tax stamps: This state has a marijuana tax stamp law enacted. This law mandates that those who possess marijuana are legally required to purchase and affix state-issued stamps onto his or her contraband. Failure to do so may result in a fine and/or criminal sanction.