Is there anything legally that he can do to keep me in the US?

say that your filing with the UCC1 and 3 state that emancipation is only concepted when some one is acting as a ward of the state and if they inquire were you filed state you filed in person. there is also house joint resolution 314. if worst comes to worst allow the state to represent you then claim that the person against you [person trying to make u stay] is a deditor and you are a creditor and you want the case to be dismissed to you.