Assuming you do get a Green Card, which is likely as you are going there with your family rather than as a qualified pilot at the moment, there were a couple of sponsorship schemes that I remember hearing about, though I can only remember that one was Continental Express which was ab initio.
I can only say that if you graduate, in order to find the cash you get a good graduate job to earn the money if there is no other source of cash. Apologies I cannot be more helpful.