Kernrechtsfrage
Whether the appellant had a right to renewal of his residence permit based on marriage to a Swiss citizen.
Extrahierter Entscheid
He had no enforceable claim because the court found his reliance on the marriage to be abusive and aimed only at securing residence in Switzerland.
Extrahierte Begründung
The spouses had been separated for years, had ceased contacts, and there were no concrete signs of renewed cohabitation; the lower court's factual findings were not shown to be manifestly incorrect.