A $1 billion class-action suit alleges that companies in Saipan, mistreat their employees. The suit says that in dozens of factories in Saipan, the capital of the Northern Mariana Islands, a U.S. commonwealth where most federal laws apply, workers are forced to work inhuman hours and live in overcrowded and vermin-infested conditions. It even suggests that the workers are enduring a form of slavery, trapped in Saipan with impossible debts and with little freedom to leave.