While marijuana use remains illegal at the federal level, 23 states and the District of Columbia have made medical use legal.
This page explores comprehensive medical marijuana laws for patients, including the diseases and symptoms that qualify a patient to use medical marijuana, where medical marijuana can be used, whether non-residents can use medical marijuana, and the possession limits for patients.
This is a longitudinal dataset, displaying medical marijuana laws in effect as of January 1, 2014 through February 1, 2016.
The Network for Public Health Law: Medical Marijuana: Unanticipated Legal Consequences and the Lessons Learned
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