Bush Can't Tranfer Gitmo Prisoners to Afganistan:

Why? They don't allow prisons without convictions:

The United States is negotiating with Afghanistan, Saudi Arabia and Yemen to return nearly all the detainees who are from those countries. In Afghanistan and Yemen, the men will reportedly be housed in U.S.-funded prisons. Talks on the possible wholesale transfers have been going on since last summer. Among the apparent sticking points: Afghanistan, like most countries, has a constitution that doesn't allow for prisoners to be held indefinitely without trial.

So, we are more restrictive than Afganistan...