In 2010, the U.S. spent a whopping $500 per second fighting the War on Drugs, and most people sent to prison for drug-related offenses are there for possession, not selling. The upshot? More than half of our prison system is filled with those drug-related offenders, which creates a huge bill for taxpayers. All told, it added up to more than $2 billion for 2009. This video infographic from Clarity Way breaks it all down.