The dilemma of what to do with the detainees at Guantanamo Bay has become one of Barack Obama's most challenging policy issues. Now, Attorney General Eric Holder has announced that the fates of half of those imprisoned have been determined, and only a quarter will face trial. There are 229 detainees held in the controversial prison in Cuba, and the vast majority of them will likely be held indefinitely. Reuters reports that those held without trial will face a "periodic review of their status." The issue of where to hold the prisoners once Gitmo closes became a political hot potato as many politicians said they would not stand for having suspected terrorists in their constituents' backyards.