Lord Lloyd of Berwick, a crossbench peer and former law lord, has questioned the Government's decision to intervene in the Gary McKinnon case.
If a suspect can be prosecuted in two or more countries the essential question is where he can best be prosecuted. That is where he is most likely to be convicted if guilty.
In almost every case that would depend on where the bulk of the evidence would be. That is a question best decided by the prosecuting authorities in the two countries involved and not by Parliament.
The Home Secretary has decided to block a request to extradite computer hacker Gary McKinnon to the US on the grounds of his human rights.
Computer hacker Gary McKinnon is due to find out whether the Home Secretary will end his 10-year battle against extradition to the US.