At least one Yemeni detainee sent home from Guantánamo Bay by the Bush Administration reportedly joined al Qaeda in the Arabian Peninsula. The Obama Administration has deemed Guantánamo such an important terrorist recruiting tool that it calls shutting it "a national security imperative." But what to do with 198 prisoners still there, about half of whom are from Yemen, where the Christmas Day bombing attempt reportedly began? If they're sent home, will they start plotting against the US? What about "re-education?" Does it work in Saudi Arabia? Could it work in Yemen? We hear about the history of repatriating detainees and what a growing controversy could mean for closing Guantánamo Bay.