Why We Should Treat, Not Blame Addicts Struggling to Get 'Clean'

Writer and journalist David Sheff talks to Judy Woodruff about his new book, "Clean: Overcoming Addiction and Ending America's Greatest Tragedy," in which he outlines a slew of reasons why society and addiction treatment programs have largely failed to help the 20 million people struggling with the disease. He explains that the stigma of addiction is one of the root causes for ineffective treatment and support.