Kernrechtsfrage
Whether the public law appeal was admissible against the refusal to renew the residence permit
Extrahierter Entscheid
The appeal in public law matters was admissible because the appellant could in principle rely on a statutory right as the spouse of a Swiss national.
Extrahierte Begründung
A foreign spouse may invoke Art. 42 LEtr in principle; the existence of common household or possible exceptions under Arts. 49 and 50 LEtr concerns the merits, not admissibility.