Question juridique clé
Whether the public-law appeal is admissible despite the absence of a residence-permit entitlement
Solution extraite
The appeal is inadmissible because neither federal law nor international law grants the applicants an enforceable right to the requested permit.
Motifs extraits
The asserted rights under Art. 8 ECHR and Arts. 13 and 14 of the Federal Constitution do not establish a claim: long residence alone is insufficient for private-life protection, and no dependent family relationship with the adult children living in Switzerland was shown.