My friends mom and dad green card holders. They travel back and forth from their home country because they have a 34 yr old son who has mild schizophrenia and is on medication. Whenever they are away he doesnt take his medication and become really ill ( can't really take good care of himself) His mother wants to attain a re-entry permit while the dad begin to file for him. Can she get a re-entry permit on that basis? And will the fact that he has mild schizoprenia disqualifies him from being a permanet resident? He poses no threat to anyone.. he is not violent.