Kernrechtsfrage
Whether the public-law appeal was admissible despite the foreigner-law limitation.
Extrahierter Entscheid
The appeal in public law was admissible because the appellant, still married to a Swiss national, could in principle rely on a derivative right to renewal under former Article 7 LSEE; the subsidiary constitutional complaint was therefore unavailable.
Extrahierte Begründung
A spouse of a Swiss citizen generally has a right to a residence permit during the formal marriage. The challenge to the renewal refusal therefore fell within the scope of the public-law appeal, even if the merits could still fail for abuse of rights.