20 million -- At least that many people worldwide are victims of human trafficking, said President Barack Obama, who denounced the barbaric trade last week before the Clinton Global Initiative in Manhattan. Calling this exploitation of people as prostitutes, child soldiers and unpaid laborers "modern slavery," he signed an executive order expanding federal anti-trafficking teams, and promised more FBI and intelligence community attention. He committed the nation to solving a problem that richly deserves a high-wattage spotlight.