Your thoughts on retrospective law regarding detainees

What are your thoughts on being charged with a crime that did not yet exist until several years after your arrest? In the matter of a Gitmo detainee he will be charged under a new law that was enacted a couple of years after his arrest.

Prime Minister John Howard has said he is satisfied with the US government implementing a retrospective law to charge Guantanamo Bay detainee David Hicks.

Although the federal government has long said Hicks cannot be charged retrospectively under Australian law, he is facing charges in the US on a law introduced five years after his arrest.

Labor's attorney-general spokesman Kelvin Thomson has said one of the charges, material support for terrorism, was not an offence until the US Military Commissions Act of 2006.

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We should definitely release everyone on technicalities that were involved with terrorism, as that would be very helpful. Or perhaps not on second thought. If Mr. Hicks was helping terrorists, he should be locked up, as should anyone else that helps terrorists, or are terrorists for that matter.