Kernrechtsfrage
Whether the public-law appeal was admissible despite the lack of a statutory or treaty-based entitlement to renewal of the residence permit.
Extrahierter Entscheid
No admissible public-law appeal lies because the applicant did not substantiate any enforceable entitlement to permit renewal.
Extrahierte Begründung
Under Art. 83 lit. c ch. 2 BGG, appeals are barred where no right to a permit exists. The asserted Art. 8 ECHR family-life claim based on the relationship with an adult son did not show the exceptional dependency required for an entitlement.