He'll get a hearing in immigration "court", an administrative court where the judge is on the payroll of the agency and very few rights you have in normal courts apply. Just to give one example, these are the same courts that have been putting 3-year-old children on trial without representation and calling that "due process".
I've been made to understand there should be a hearing before an administrative law judge but I don't know much beyond that. I don't think he gets a jury or anything like that, though.
