WASHINGTON (AP) -- Budget talks between President Barack Obama and his GOP rivals are at a frustrating standstill, leading a top Republican to launch a long-shot proposal to give Obama sweeping new powers to muscle through an increase in the government's debt limit without the approval of a bitterly divided Congress.
Lawmakers return to the White House Wednesday for their four negotiating session with the president in as many days. Obama has said the daily meetings will continue until a deal is reached.
A two-hour session Tuesday produced no progress after a day of poisonous exchanges between Democrats and Republicans.
Senate GOP leader Mitch McConnell of Kentucky offered a backup plan that would, in effect, guarantee Obama requests for new government borrowing authority unless Congress musters veto-proof majorities to deny him. McConnell said he was forced to introduce the plan because he didn't see a path to an agreement so long as Democrats insist on revenue increases.
McConnell said Wednesday that his proposal was a "last resort if the president continues to shirk his duties to do something about our dire fiscal situation."
"Make the president show in black and white the specific cuts he claims to support. If he refuses he'll have to raise the debt ceiling on his own," McConnell said on the Senate floor. "But he's not going to get Republicans to go along with that."
McConnell's proposal immediately ran into stiff opposition among tea party conservatives and seemed unlikely to pass the House, but neither the White House nor House Speaker John Boehner, R-Ohio, dismissed it out of hand.
"I think everybody agrees there needs to be a backup plan if we can't come to an agreement," Boehner said in a Fox News Channel interview Tuesday afternoon. "And frankly, I think Mitch has done good work."
Under McConnell's proposal, Obama could request - and likely secure - increases of up to $2.5 trillion in the government's borrowing authority in three separate installments over the coming year as long as he simultaneously proposed spending cuts of greater size.
The debt limit increases would take effect unless blocked by Congress under special rules that would require speedy action - and even then Obama could exercise his authority to veto such legislation. But the president's spending would have no guarantee of receiving a vote.
"The American people elected (McConnell) to serve as a check on Obama's appetite for out-of-control spending, not to write him a blank check to continue the binge," said conservative activist Brett Bozell. "It's these sort of shenanigans that got Republicans thrown out of power in 2006."
Tea party favorite Sen. Jim DeMint, R-S.C., asked about McConnell's plan Wednesday on CBS' "The Early Show," said, "Republicans weren't elected last November to make it easier to spend and borrow and add to our debt."
GOP presidential candidate Newt Gingrich wrote on Twitter, "McConnell's plan is an irresponsible surrender to big government, big deficits and continued overspending."
Republicans, meanwhile, continued pushing for a balanced budget amendment that would require Washington to balance its books. McConnell said politicians in Washington have showed they can't get the job done, and "If the president won't do something about the debt we'll go around him and take it to the American people."
McConnell made his proposal public a few hours before Obama presided Tuesday over his third meeting in as many days with congressional leaders searching for a way to avoid a default and possible financial crisis.
Democratic officials who participated in the session said Obama did not reject McConnell's idea, but said it's not his preferred approach. A statement issued later by press secretary Jay Carney said the president "continues to believe that our focus must remain on seizing this unique opportunity to come to agreement on significant, balanced deficit reduction."
McConnell's plan was hatched out of frustration that Congress and Obama are deadlocked as the clock ticks toward an Aug. 2 deadline for a market-rattling default on U.S. obligations. McConnell said he still hoped a deal could be reached, but that a backup plan would show the markets and public that default is not an option.
Republicans are demanding $2 trillion-plus in budget cuts as the price for a commensurate increase in the government's ability to continue to borrow more than 40 cents of every dollar it spends. Both Republicans and Obama see the politically toxic debt limit vote as a way to seize an opportunity to cut future deficits - a move that would seem to be to the political benefit of both sides.
But GOP refusals to consider devoting any new revenue from closing tax loopholes - like those enjoyed by oil and gas companies - to cutting the deficit has led Democrats to withhold further spending cuts beyond a handful tentatively agreed to during several weeks of talks led by Vice President Joe Biden in May and June. For their part, Republicans say the White House is offering minuscule spending cuts in the near term and is pulling back from some tentative agreements on topics like requiring federal workers to contribute more to their pensions.
Staffers were meeting at the White House Wednesday morning to work out agreements on specific cuts discussed during those earlier Biden-led talks. The meeting with Obama, Biden and congressional leaders later Wednesday was expected to build on those discussions.
Obama himself upped the stakes Tuesday, telling CBS News anchor Scott Pelley that more than $20 billion in Social Security checks could be held up.
"I can't guarantee that the checks will go out Aug. 3 if we haven't resolved this," Obama said. "There may simply not be the money in the coffers to do it."