Assuming the child is still in his authorized period of stay, a request to extend his status must be filed. If his period of authorized stay has already expired, he would not be able to extend his stay in the United States. He would need to depart the country and re-enter on a valid visa. You can read more about nonimmigrant visas at .http://myattorneyusa.com/travel-visas.
Answered on Mar 02nd, 2016 at 4:56 AM