@Frank Apisa,
From what I understand, Snowden and his lawyers are asking for that justification defense be granted before he comes back rather than the usual way through the court. Once again asking for special favors and calling a fair trial.
Like I sad, at this point, since most of the damage has been done, I think Snowden should just remain where he is. If he comes back, the whole thing will dragged up again, putting the OJ Simpson and Travon Martin trials in the shade as far as public consumption. However, for his own sake, I would think he want to at least try and clear his name so that he has a chance to be free to do as he wants.