Question juridique clé
Whether the federal department had standing to challenge the cantonal detention decision
Solution extraite
Yes. The competent federal department could appeal on behalf of the Confederation against the final cantonal decision in order to secure correct application of federal migration law.
Motifs extraits
The appeal concerned a concrete legal dispute and the clarification of Art. 13c para. 5 lit. a ANAG in a real case, not an abstract question.