Questione giuridica chiave
Whether the public law appeal was admissible against the refusal to extend a study residence permit.
Decisione estratta
It was inadmissible because no federal or international law conferred a right to the permit.
Motivazione estratta
Study permits under Art. 32 OLE are discretionary under Art. 4 LSEE; therefore Art. 83(c)(2) BGG barred the public law appeal.