Labour MP Kelvin Davis is right. It is disingenuous of John Key to say Australia's detainees at Christmas Island are free to leave if they want. They can leave only to return to New Zealand, where they could continue their appeal against deportation from Australia. Mr Key has been assured by Australian Prime Minister Malcolm Turnbull that their chances would not be reduced by coming back here. But they are probably thinking yeah, right.
The detainees have a better chance by staying on Australian territory, albeit a hot, desolate island in the Indian Ocean where this week they have staged something of a riot. It is said to have started with an argument over the death of an Iranian Kurd asylum seeker who tried to escape from the detention centre, but that was just the trigger for the ex-convicts with cancelled visas to start fires, smash walls and cause the immigration officers to retreat from that part of the facility.
The incident will have done nothing for the prospects of the individuals involved, nor has it helped New Zealand argue on their behalf that they have paid their dues for breaking the law of their adopted country and their rehabilitation is best served by remaining where they have families and social connections.
But their frustration can be understood, particularly if, as one of them told the Herald this week, they have agreed to come back here but their applications are taking as many as 14 weeks to process.
Deportation on the scale the Australian Government is undertaking cannot be quick or cheap. Each detainee will have to be escorted to the point of departure. It hardly seems worth the cost, let alone the damage to Australia's international reputation, when incidents such as the Christmas Island riot occur.