Monday afternoon, Robert Duncan will report to Mendota Federal Prison in Fresno, Calif., to begin a two-year prison sentence. His crime? Working for a medical marijuana business that was legal under California state law. Not owning it; not profiting from illegal sales. Merely for being employed by the business.

The collective of dispensaries Duncan worked for, known as MediZen, was raided by federal authorities in 2011 during a crackdown on medical marijuana providers by the Obama administration.

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