Legal Question in Family Law in Illinois

The only way to stop the move is to file an action to be declared Dad, if you are not yet determined to be Dad, for custody or visitation and to enjoin her from leaving

Are you or were you and the mother married when the child was born? If not, have you been declared the father of this child? What you can do depends on the answers to these questions. There is nothing you can do if you have not been legally declared the father.