Kernrechtsfrage
Whether the public law appeal was admissible despite the lack of a legal entitlement to renewal of the residence permit.
Extrahierter Entscheid
No admissible public law appeal lies because no entitlement under federal law or international law was shown.
Extrahierte Begründung
Art. 50 AuG did not apply due to the absence of a three-year marital union and no serious personal reasons; Art. 8 ECHR also gave no claim because there was no maintained family relationship with the son.