Although the use and possession of marijuana are illegal under federal law, states can choose to decriminalize and pass marijuana laws for medical marijuana and recreational marijuana. Marijuana laws vary state to state. See a list of Nevada marijuana laws to follow as Nevada medical marijuana patients. State-level marijuana proposals include laws and regulations for the marijuana industry that vary per state and do not reflect the federal laws which currently list marijuana as an illegal substance with no medical value. Some states have legalized marijuana for recreational use while others, like Nevada, passed marijuana laws for medical marijuana use.