Protection of employees is weaker than anywhere else in the US. The Northern Mariana Islands have been accused by the US Federal Government and various other organizations for enslaving foreign workers (particularly from China and the Philippines) and immigrants in sweatshops and prostitution.
It can be as low as 18 or as high as 21 depending on where the child lives. In Delaware, the age of majority is 18. However, almost all states allow the child, a parent or a guardian ad litem to write to the judge and/or petition the court for modification of the original custody agreement.
If a child is 11 years old, he or she is allowed to indicate to the judge which parent he or she prefers to stay with. However, the judge does not have to give any particular deference to the child's wishes. When a child reaches 14 years of age, he or she can pick which parent he or she wants to live with. The judge can only overrule the child's wishes upon a strong showing that the child's best interests would not be served thereby.