A new U.S. State Department report says North Korea and Burma are not complying with the minimum standards to eliminate human trafficking.
The annual report, issued Monday, accuses North Korea of being a source country for people trafficked for forced labor and sexual exploitation.
It also says Pyongyang imposes slave-like labor conditions on its prisoners.
The report says Burma's military government is involved in trafficking for forced labor, and notes some children have reportedly been forced to enlist in the Burmese army.
North Korea and Burma already face U.S. sanctions for human trafficking.
The State Department report also places Japan, the Philippines, Thailand, Laos and Vietnam on a "watch list" that says they may face U.S. sanctions if their records on human trafficking do not improve.