Slavery didn't end with the American civil war. Today, Saudi Arabia and Iran are competing with North Korea and the Democratic Republic of Congo in the horrific growth industry of human trafficking.

In the report's preface, Secretary of State Hillary Clinton describes her visit to a shelter for trafficking survivors last year.

"I was embraced by children who should have been in grade school, but were instead recovering from having been enslaved in a brothel," she wrote.

In the report's preface, Secretary of State Hillary Clinton describes her visit to a shelter for trafficking survivors last year.

"I was embraced by children who should have been in grade school, but were instead recovering from having been enslaved in a brothel," she wrote.