Questione giuridica chiave
Whether the Federal Migration Office was entitled to appeal the cantonal detention decision.
Decisione estratta
Yes. In aliens-law matters it may appeal to secure correct and uniform application of federal law, without showing a separate specific interest.
Motivazione estratta
Art. 89(2)(a) BGG and Art. 14(2) OV-EJPD expressly authorize the office to appeal in foreigner and citizenship matters; the appeal concerns a concrete case, not abstract review.