Questão jurídica principal
Whether the federal appeal should still be decided on the merits after the detention ended.
Decisão extraída
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.
Fundamentação extraída
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.