Questão jurídica principal
Whether the federal administrative appeal was admissible against the cantonal judgment granting a residence permit renewal
Decisão extraída
Yes. The federal office could challenge a cantonal final decision that allegedly granted a residence permit in violation of federal law.
Fundamentação extraída
The appeal was admissible because the federal office acted to ensure uniform and correct application of federal public law, even though private parties may lack such a right in immigration matters.