Based upon your understanding of federalism and the Supremacy Clause of the US Constitution, do you believe the federal government has the /â€right to preempt state medical and/ or recreational marijuana laws? Why or why not? Who should be responsible for drug enforcement in the United States, the states or the federal government? The Constitution gives â€œpolice powersâ€ to the states. Does this mean states should be free to make and enforce their own laws for medical/ recreational marijuana use? How do you personally feel about the legalization of marijuana in the United States?