I understand there is a state law, where non-citizens can not be admitted to, or recieve financial aid of any kind. Unless he becomes a citizen by next year he will not be able to attend a state institution. Also as an international student, which he would be considered, will need to have what they call an I-20 in order to get a student VISA. You must leave the nited States to do this. He could have several things that will need to be dealt with. I don't think Clemson is a good fit for him.