Monica Castro says her common law husband was abusive, so she called immigration officials to report him as an illegal immigrant. Border Patrol agents admit they told her she would retain custody of her U.S.-born daughter. But when they arrested the husband, they let him take the infant, and when Castro went to the detention center to pick up the girl, they told her she needed a court order. But that same day, the infant and her father were put on a bus to Mexico. It took Castro three years to find the girl and bring her home. Now, she is suing the Border Patrol.