WASHINGTON (AP) -- President Barack Obama on Tuesday vowed to "once and for all" close the detention center at Guantanamo Bay, Cuba and transfer the most detainees to a facility in the U.S., submitting a plan short on specifics and unlikely to make headway with opponents in Congress.
Obama cast his proposal, released Tuesday after months of delay, as a moment to turn the page on a facility that for years has raised nettlesome legal questions, become a recruitment tool for violent extremists and garnered strong opposition from some allies abroad.
"I don't want to pass this problem onto the next president, whoever it is," Obama said, in an appearance at the White House. "If we don't do what's required now, I think future generations are going to look back and ask why we failed to act when the right course, the right side of history, and justice and our best American traditions was clear."
Despite the big ambitions, Obama's proposed path to closure remained unclear. It leaves unanswered the politically thorny question of where in the U.S a new facility would be located and whether it could be completed by the end of Obama's term. Moving detainees to U.S. soil is currently prohibited under U.S. law and lawmakers have shown little interest in removing the restrictions.
"We will review President Obama's plan but since it includes bringing dangerous terrorists to facilities in U.S. communities, he knows that the bipartisan will of Congress has already been expressed against that proposal," said Senate Majority Leader Mitch McConnell, R-Ky.
House Speaker Paul Ryan, R-Wis., said Obama had yet to convince Americans that moving detainees to U.S. soil is "smart of safe."
"It is against the law - and it will stay against the law," Ryan said.
Even Sen. John McCain, R-Ariz., a former prisoner of war and an advocate of closing the prison, called Obama's report a "vague menu of options," which does not include a policy for dealing with future terrorist detainees.
Obama has "missed a major chance to convince the Congress and the American people that he has a responsible plan to close the Guantanamo Bay detention facility," he said.
It's not clear whether that chance ever existed. Momentum to close the facility has slowed dramatically under Obama's tenure. Congress remains deadlocked on far less contentious matters, and the issue has little resonance on the presidential campaign trail.
Still, for Obama, the facility stands as a major unfilled promise and a painful reminder of the limits on his power: His first executive order sketched out a timeline for closing the prison, but was ultimately derailed by Congress.
The White House has not ruled out the possibility that the president may again attempt to close the prison through executive action - a move that would directly challenge Congress' authority. The plan submitted Tuesday does not address that option.
The proposal underscores the administration's strategy of shrinking the population, hoping the massive cost for housing the diminished population would ultimately make closure inevitable.
Under the plan, roughly 35 of the 91 current detainees will be transferred to other countries in the coming months, leaving up to 60 detainees who are either facing trial by military commission or have been determined to be too dangerous to release but are not facing charges.
Those detainees would be relocated to a U.S. facility that could cost up to $475 million to build, but would ultimately be offset by as much as $180 million per year in operating cost savings. The annual operating cost for Guantanamo is $445 million. The U.S. facilities would cost between $265 million and $305 million to operate each year, according to the proposal.
The plan considers, but does not name, 13 different locations in the U.S., including seven existing prison facilities in Colorado, South Carolina and Kansas, as well as six other locations at current correctional facilities on state, federal or military sites in several states. It also notes that there could be all new construction on existing military bases. The plan doesn't recommend a preferred site and the cost estimates are meant to provide a starting point for a conversation with Congress.
More detailed spending figures, which are considered classified, will be provided to Congress, said U.S. officials, who were not authorized to discuss the plan publicly ahead of its release, so spoke on condition of anonymity.
Members of Congress have been demanding the Guantanamo plan for months, and those representing South Carolina, Kansas and Colorado have voiced opposition to housing the detainees in their states.
"We must safeguard the missions on Fort Leavenworth, the nearly 14,000 military and civilian personnel and their family members, and the thousands of Kansans who live in the Leavenworth community," Sen. Jerry Moran, R-Kan., said in a statement Tuesday.
Advocates of closing Guantanamo say the prison has long been a recruiting tool for militant groups and that holding extremists suspected of violent acts indefinitely without charges or trial sparks anger and dismay among U.S. allies.
Opponents, however, say changing the detention center's ZIP code won't eliminate that problem.
On that point, Obama's proposal faced criticism even from those who endorse closing the detention center. His initial campaign pledge was widely viewed as a promise to end the practice of detaining prisoners indefinitely without charge, not to bring that practice to the U.S., said Naureen Shah, director of Amnesty International USA's Security and Human Rights Program.
"Whatever the president proposes, even if it doesn't come to fruition, the administration is changing the goal posts on this issue," she said.
Obama said Tuesday he would also propose changes to the military commissions, which he noted have been costly and ineffective. Those changes would also require congressional action, he noted.
