Questione giuridica chiave
Whether the federal department was entitled to challenge the cantonal detention decision by administrative appeal
Decisione estratta
Yes. As the competent federal department, it could appeal the last cantonal decision to secure correct and equal application of federal administrative law.
Motivazione estratta
The court relied on settled case law that federal authorities need not show a special public interest where they seek review of a concrete case, not abstract legal questions.