President Obama has unveiled plans to close the controversial detention facility at Guantanamo Bay in a move that would satisfy one of his long-time goals.
The prison costs $445million (£316million) to run annually and its closure is a national security imperative, senior officials in the Obama administration said.
However Congress, to which the plans have been submitted, is deeply opposed to closing Guantanamo and is likely to block the move.
The Pentagon said that the remaining 91 detainees at the facility would be transferred to prisons and military bases on the US mainland.
US officials say that included within the plan are 13 suggestions of facilities to which the Guantanamo detainees could be moved, including seven prisons in Colorado, South Carolina and Kansas, and six locations on current military bases.
Representatives for South Carolina, Kansas and Colorado have voiced their opposition to a potential relocation of inmates to their states.