Obama rejects GOP stopgap proposal, says no more budget extensions

And in a memo to agency officials, the deputy director of the Office of Management and Budget, Jeffrey Zients, urged agency heads to refine and update contingency plans in the event negotiators don't strike a deal by Friday's deadline

Boehner's one-week plan could reassure tea party-backed lawmakers who are among the most vocal in seeking to reduce the size and scope of the government. It could also put pressure on Democrats and the White House to offer greater spending cuts.

But there's no visible movement on an impasse over GOP policy riders attacking Obama's health care and financial reform laws, cutting taxpayer funds to Planned Parenthood and reversing a host of Obama's environmental policies.

On a separate long-term track, Republicans controlling the House have fashioned plans to slash the budget deficit by more than $5 trillion over the upcoming decade, combining unprecedented spending cuts with a fundamental restructuring of taxpayer-financed health care for the elderly and the poor.

House Budget Committee Chairman Paul Ryan, R-Wis., unveiled the GOP budget blueprint Tuesday morning just as Boehner, R-Ohio, headed to the White House for the meeting with Obama, Vice President Joe Biden and Senate Majority Leader Harry Reid of Nevada, his chief nemesis in Congress.

Ryan's program also includes a controversial proposal to convert the traditional Medicare program for the aged into a system by which private insurers would operate plans approved by the federal government.

Current Medicare beneficiaries or workers age 55 and older would stay in the existing system.

At the same time, Republicans propose to sharply cut projected spending on the Medicaid state-federal health program for the poor and disabled and transform it into a block grant program that gives governors far less money than under current estimates, but considerably more flexibility.