"Liberals and right-wing libertarians are pressing for an end to prohibition. Forty years after President Nixon launched the 'war on drugs' there is a growing momentum to abandon the fight. ... Three factors are driving the momentum. Baby boomers who smoked pot in their youth do not share previous generations' fear of the demon weed. Economic crises have squeezed law enforcement budgets and prompted states to seek fresh revenue sources. And Mexico's horror show of shootings, beheadings and mayhem shows what happens when a rhetorical war turns all too real."