They need to be sent back. If terrorists in China find out they can receive assylum in the West, then it will only embolden them to wage war against the Chinese people.
As usual, we disagree. And fortunately for these Uighur rebels, Obama is unlikely to repatriate them to China. Uighurs are not our enemy. They were in Afghanistan because it was the only place they could receive training to overthrow the Chinese imperialists who massacred their ancestors and stole their land. Interestingly enough, East Turkistan (the land of the Uighurs) is probably the only Turkic land still involuntarily under the foreigner's boot.