Question juridique clé
Whether the Federal Supreme Court could review the complaint authority's cost decision after the detention complaint had become moot.
Solution extraite
The appeal was admissible only as to the cost and expense decision; broader requests for declaratory findings were inadmissible.
Motifs extraits
The contested decision concerned only costs after mootness. Declaratory requests exceeded the dispute or lacked a sufficient legal interest and had not been properly raised below.