Kernrechtsfrage
Whether the public-law appeal was admissible for the spouses and children despite the foreign-law residence permit context.
Extrahierter Entscheid
The appeal was admissible for A. and B. because a potential entitlement under immigration law was plausibly invoked; it was inadmissible for the adult children because they could not rely on Art. 8 ECHR for family reunification.
Extrahierte Begründung
Potential entitlement suffices for admissibility. The children were already adults and showed no special dependence on their mother, so they could not derive a current family-life right from Art. 8 ECHR.