Questione giuridica chiave
Whether the federal appeal should still be decided on the merits after the detention ended.
Decisione estratta
The appeal lost its current practical interest and did not meet the strict conditions for a merits review despite mootness; the proceedings were therefore struck off.
Motivazione estratta
Once the appellant was released from enforcement detention, the subject matter of the appeal ceased to exist. The exceptional grounds for deciding a moot case were not met.