Mandatory minimum sentencing has existed throughout U.S. history, at one time used to punish mostly treason and murder. But in the 1980s, Congress saw mandatory minimums as a way to tackle a different kind of crime: drug offenses. As part of the “war on drugs," there was bipartisan support for tough sentences, rather than rehabilitation. Today, the pendulum might be swinging in the other direction. With a prison population soaring and budgets tightening, lawmakers from both parties are supporting ways to reform these sentences, and Attorney General Eric Holder is weighing in. Diane and her guests discuss the debate over mandatory minimum sentencing.