Over the last few years, marijuana has become legally available for recreational use to roughly a quarter of Americans. Policy makers have long expressed concerns about the substantial external costs of alcohol, and similar costs could come with the liberalization of marijuana policy. Indeed,...

The median United States voter supports the legalization of marijuana, at least in part due to a desire to increase state tax revenues. However, states with legal markets have implemented wildly different regulatory schemes with tax rates ranging from 3.75 to 37 percent, indicating that policy...