Key legal question
Whether the public-law appeal against the refusal of residence permits was admissible despite Art. 83 lit. c ch. 2 BGG.
Extracted holding
The public-law appeal was inadmissible because no enforceable right to the requested residence permit existed.
Extracted reasoning
Neither the mother nor the son could derive a legal entitlement from family life protections; the son had no relatives with secure residence in Switzerland, and his private-life ties were not exceptionally intense.