Administration officials said that the plan to close Guantanamo Bay should be coming out this week and includes details about relocating dangerous detainees to the correctional facilities inside the U.S..

The plan represents a last-gasp effort by the Obama administration to convince staunch opponents in Congress that dangerous detainees who can’t be transferred safely to other countries should be housed in a U.S.-based prison.

Officials said that other possible locations for relocating the Gitmo terrorists are prison sites in Colorado, South Carolina and Kansas.

But any decision where to relocate the terrorists would require congressional approval. "At the same time, dangerous prisoners are not new to Colorado. The Supermax in Florence, Colorado, which has been dubbed 'Alcatraz of the Rockies,' already holds convicted terrorists, including Unabomber Ted Kaczynski and Zacarias Moussaoui, one of the conspirators of the Sept. 11, 2001, attacks. The Pentagon plan also lays out the broader effort to reduce the detainee population at Guantanamo, through transfers to other countries."

In order to approve a transfer out of Gitmo and the U.S. detention system, Defense Secretary Ash Carter "must conclude that the detainees will not return to terrorism or the battlefield upon release and that there is a host country willing to take them and guarantee they will secure them."

Senator John McCain has asked the administration for their plan to close Gitmo.

“I’ve asked for six and a half years for this administration to come forward with a plan – a plan that we could implement in order to close Guantanamo. They have never come forward with one and it would have to be approved by Congress,” McCain said this week.

A plan to move the terrorists to Colorado might find some pushback.

“I will not sit idly by while the president uses political promises to imperil the people of Colorado by moving enemy combatants from Cuba, Guantanamo Bay, to my state of Colorado,” Republican Sen. Cory Gardner told a Capitol Hill news conference.

Gardner told the Associated Press that “the pressure that this would put on our judicial system in Colorado is real. The challenges that could be brought through the legal system we’re not prepared for. I think that’s another question on our federal judiciary in Denver. This is a rural area of Colorado. Would they be transported to downtown Denver to the federal courthouse for a hearing?”

It's possible Obama will just try and close the detention center without congressional approval.

“I would not take anything off the table in terms of the president doing everything that he can to achieve this critically important national security objective,” White House spokesman Josh Earnest said this week, when asked whether Obama would act unilaterally. “And this is a pretty transparent case of the United States Congress putting narrow political interests ahead of national security.”