The war on drugs
It’s not going away because lobbying for marijuana prohibition makes lobbyists rich. And follow the money:
Some of the groups who want to keep the drug illegal are police unions that want more members to pay more dues. One of the primary sources for cash for more policing activities are Federal grants for penalizing illegal drug use, which help pay for overtime, additional police officers, and equipment for the force. Thatís what Lovell does, he gets those grants. He also fights against democratic mechanisms to legalize drugs.