prohibition

In the early third of the last century, alcohol prohibition succeeded in creating and sustaining an underground economy, wherein most of the profit from alcohol went to such grand, life affirming people as Al Capon. Today, despite appeals to Patriotism, people still spend well over 100 billion dollars a year on interdicted intoxicants. If we legalize those substances, we can stop funding terrorists.

Tax it. Quit wasting money incarcerating high people and letting drunks run free. No one has ever overdosed on marijuana, people drink themselves to death all the time. Prohibition doesn't work, it just generates a much more lucrative market than the legal one. Just ask the mafia.