This bill would remove marijuana from the list of federally controlled Schedule I drugs (a list that includes acid, coke, ecstasy, PCP, and heroin) and give control of legalization to individual states. 

So if a state wants to regulate marijuana like alcohol (like four states and the District of Columbia have already done), or legalize medical marijuana (like 23 states and D.C., have) — people in those states don't have to worry about federal penalties for marijuana possession. That said, states who don't want recreational or medical marijuana can maintain marijuana's illegal status. 

Transporting marijuana across state lines and to and from U.S. territories would still be illegal. The bill would also require any growers, sellers, or importers of marijuana to obtain a permit for any of these marijuana-related activities.