Questione giuridica chiave
Whether the public law appeal was admissible despite the immigration exclusion clause.
Decisione estratta
A potential right under Art. 49 LEtr could not be excluded at the admissibility stage, so the public law appeal was open.
Motivazione estratta
For admissibility, a plausible entitlement suffices; Art. 49 LEtr could potentially maintain a right based on Art. 42 LEtr.