Cannabis and border towns in the United States

Since 2012, various jurisdictions in the United States have legalized cannabis for recreational use. Because there are no border controls between U.S. states and citizens are allowed to travel freely between them, this has resulted in the proliferation of cannabis dispensaries located in towns that border states where cannabis remains illegal or where the legal market is more expensive and/or heavily regulated.

Source: Wikipedia — Cannabis and border towns in the United States (CC BY-SA 4.0)