Yesterday, when Colorado Governor Jon Hickenlooper added Amendment 64 to the state’s constitution it became legal for adults to possess, use and even grow a limited quantity of marijuana for their personal. This historic moment was in part made possible thanks to the work of Mason Tvert, who was an official proponent of the initiative and the co-director of the campaign in support of it.

I recently had a conservation with Mr. Tvert about Amendment 64 and what he thinks it will mean for the future of marijuana legalization.