Many of the federal laws are created based on the interstate (between state) commerce clause, including the federal drug laws. However, CO, and all those states that have legalized weed at the state level have challenged the federal drug laws by creating state laws specifically stating that weed should not leave the state (and thus not causing interstate commerce). So, what happens when state laws specify that people can own all manner of weapons at the state level, but that those weapons must not leave the state?