Let me get this straight: we don't need to add anything. They can put GPS on people now. My client, the one who was being deported for criminality, was put on a GPS bracelet by an immigration division member. My security certificate cases were put on GPS by a Federal Court judge.
They have a broad power to impose conditions on a person. Conditions can include GPS; they can include house arrest. You don't need to add anything specific; it's already there. And right now, it's used sparingly. They only do it in really serious cases.