Many factors are responsible for why other countries are making significant progress regarding cannabis legalization while the United States slowly follows far behind. The justifications among these countries vary from hoping to reduce drug-related crimes and violence to boost medical tourism in their countries. While the United States presents lots of struggles to pick from to push cannabis legalization at the federal level, a single strong-enough cause has not been chosen. Without this, it will be difficult for the United States to transition into a cannabis post-prohibition era.