Simply put, the current fragmented patchwork of laws governing marijuana in states is unsustainable. Despite the oft-repeated refrain that marijuana enforcement is an issue of “states’ rights,” the consequences of legalization are not confined by geographic borders. Since Colorado legalized, marijuana has streamed into neighboring states and emboldened drug trafficking organizations there. In fact, in Nebraska and Oklahoma, the inflow of marijuana trafficking has been so dramatic that the states sued Colorado. Interstate drug tourism is thriving, with companies in states with legal pot advertising across state lines and online.