Alcohol prohibition did not work - it created the black market, the mob, and countless criminals, who would not have been otherwise. Why? Because if there is one thing Americans don't like - its being told they can't do something - especially if it isn't hurting anyone else. Marijuana prohibition does not work either - it never has. The $Trillion dollars that has been spent on our 40 year war on drugs has resulted in drugs being easier and cheaper than ever to get than before the drug war. For a TINY fraction of the cost of the war on drugs we could set up treatment centers for those who want help quitting - and then we could just leave everyone else alone. All of our laws already address driving while ability impaired.