Questione giuridica chiave
Whether the public-law appeal was admissible despite the foreigner-permit context.
Decisione estratta
The appeal was admissible because the applicant could invoke a potential right under Art. 42 LStr and, in principle, Art. 8 ECHR.
Motivazione estratta
For admissibility, it was enough that federal or international law might confer a right; the court did not need to determine definitively whether the substantive conditions were met.