It was 1971 when President Richard Nixon declared a "war on drugs." $ 2.5 trillion dollars later, drug use is half of what it was 30 years ago and thousands of offenders are successfully diverted to treatment instead of jail. Still, 22 million Americans - nine percent of the population - still use illegal drugs; and with the highest incarceration rate in the world, we continue to fill our prisons with drug offenders, leaving shattered families and communities in the wake. Is it time to legalize drugs or is this a war that we're winning?