“Talks on ending the government shutdown and preventing default have once again deadlocked, but this time it is Democrats who are demanding changes to current law as a condition for ending the impasse,” ABC News reports.

“Democrats are now insisting on spending increases — they want to end most of the cuts put in place as part of the so-called sequester. To Republicans, this is a non-starter, unless the sequester spending cuts are replaced with cuts to entitlement programs — and that is a non-starter for Democrats.”

“The impasse makes it more likely there will be no agreement when markets reopen Monday morning.”

The Wall Street Journal reports Senate leaders “made clear they were aware that the uncertainty shrouding the debt ceiling could worry investors when the market reopens Monday.

Senators Harry Reid and Mitch McConnell “say they will continue negotiating on Sunday for a way to reopen the government, lift the debt ceiling — the deadline is on Thursday — and find a way out of a crisis that could have perilous implications for the nation’s economy,” the New York Times reports.

Politico notes “the burden to find a solution now falls squarely” on Reid and McConnell — “two shrewd tacticians who have a long, complicated and contentious personal and political history with each other.”

Washington Post: “During the fiscal crises that have gripped Capitol Hill over the past five years, each resolution and compromise came after Senate leaders picked up the pieces of failed efforts between the White House and the House.”

“Even for a Congress where griping is endemic and insults routine, spirits were especially dark on Saturday,” the Washington Post reports.

“Most vocal in their bitterness were House Republicans, who voted midday and then left Washington until Monday, sputtering as they went that President Obama had halted talks with their leaders in favor of negotiating with Senate Republicans — and even angrier that their Senate colleagues seemed receptive to the president’s overture.”

“Senate Republicans were likewise fed up with their House colleagues, for refusing to accept that they will not win major changes to the federal health-care law and that their party’s leverage only decreases as the shutdown drags and default approaches.”

Rep. John Fleming (R-LA) said there was “definitely a chance that we’re going to go past the deadline” that Treasury Secretary Jack Lew has set for Congress to raise the $16.7 trillion debt limit, the AP reports.

The New York Times notes that “even if the current talks soon resolve the immediate impasse, which did not look likely on Saturday, any renewal of negotiations for a long-term fiscal plan will run into the same underlying problem that has doomed efforts for the past three years.”

“Republicans refuse to raise additional tax revenue, and until they do, Mr. Obama will not support even his own tentative proposals for reducing spending on fast-growing social benefit programs, chiefly Medicare. During a White House meeting with Senate Republicans on Friday, he reiterated that the two go hand in hand, according to people who were there.”

Rep. Morgan Griffith (R-VA) suggested the House should reject an unfavorable agreement from the Senate, even if it resulted in a debt default that severely damaged the economy, The Hill reports.

Said Griffith: “We have to make a decision that’s right long-term for the United States, and what may be distasteful, unpleasant and not appropriate in the short run may be something that has to be done.”

He added: “I will remind you that this group of renegades that decided that they wanted to break from the crown in 1776 did great damage to the economy of the colonies. They created the greatest nation and the best form of government, but they did damage to the economy in the short run.”

Senate Majority Leader Harry Reid (D-NV) and Minority Leader Mitch McConnell (R-KY) “have launched discussions over a proposal to raise the debt ceiling and end the government shutdown, after talks between House Republicans and President Obama reached an impasse,” the Washington Post reports.

“The fact that the leaders are now directly engaged in talks suggest an intensifying bipartisan desire to end the fiscal impasse that has kept the government shuttered for nearly two weeks and raised the risk of a historic default later this month.”

Vice President Joe Biden, who has brokered Senate deals in the past, is at Camp David this weekend, according to the Washington Times.

“They’re trying to cut the House out, and trying to jam us with the Senate. We’re not going to roll over and take that.”

— Rep. Paul Ryan (R-WI), quoted by National Review, saying Senate Republicans interfered with their negotiations with the White House and suggesting they were “double-crossed.”

House Speaker John Boehner (R-OH) told House Republicans in a closed meeting this morning “that there is no deal to reopen the government and hike the debt ceiling, and no negotiations going on with the White House,” Politico reports.

Rep. Raul Labrador (R-ID) told The Hill: “It’s up to the Senate Republicans…the president rejected our deal.”

Roll Call: “But even as House lawmakers seemed to be throwing the ball into the Senate’s court, there was deep suspicion of the Senate Republicans’ willingness to cut an acceptable deal with the White House and Senate Democrats.”

“If I was in the Senate right now, I’d kill myself.”

— Gov. Chris Christie (R), quoted by the Philadelphia Inquirer.