WASHINGTON -- The nation's sharp disagreements over taxes and spending are on a re-routed collision course, as Senate Democrats launch a plan that includes new taxes and House Republicans vow to speed up their plan to balance the federal budget with spending cuts alone.

The Republicans' new approach would require even deeper cuts in social programs than they pushed last year. Liberals denounced those earlier plans as severe and unfair, and they say the new version would be worse.

The new commitments by House and Senate members stem from the ongoing dispute over raising the federal debt ceiling. The House voted Wednesday to postpone any showdown over the borrowing limit for three months. The Democratic-led Senate plans to endorse the idea, which the White House also supports.

That means the next big budget clash will occur in March. That's when major, across-the-board spending cuts – both parties dislike them – are scheduled to begin unless they are replaced by a different deficit-cutting technique.

It's possible that both parties will continue to find ways to postpone and minimize tough decisions on taming the deficit. But the new House and Senate endeavors could make such dodges more difficult. Voters, meanwhile, may get a clearer picture of the unpleasant choices they face.

"The American people will have a chance to compare the two approaches," said Rep. Trent Franks, R-Ariz., who wants deep spending cuts and no new taxes. The only way to shrink the government, he said, "is to choke the monster."

House Republicans now vow to balance the budget in 10 years without tax hikes. They say the methods might include reducing future benefits for Medicare, and possibly Social Security, for people now in their late 50s, rather than those 55 and younger.

The search for savings must "move over into entitlement spending" more so than before, said Rep. John Fleming, R-La.

Balancing the budget in 10 years without tax increases would require deep spending cuts, causing many analysts to view them as politically near-impossible. Such an effort would require cuts "that are a complete nonstarter for anybody – probably even including House Republicans themselves," said Michael Ettlinger, an economist at the Democratic-leaning Center for American Progress.

But House conservatives say aiming for that goal is important. They demanded this week that GOP leaders agree to balance the budget in 10 years as the conservatives' price for supporting the three-month extension of federal borrowing powers.

House Democratic leader Nancy Pelosi called the new Republican goal "Ryan on steroids." She was referring to earlier Republican budgets drafted by House Budget Committee Chairman Paul Ryan, the party's 2012 vice presidential nominee.

Ryan's earlier plans would have changed Medicare into a voucher-like program with limited government contributions to health care for seniors. His plans, endorsed by most House Republicans, also would have given states full responsibility for running Medicaid – the health care program for the poor – with a reduced federal contribution.

Even with those changes, Ryan's 2011 and 2012 plans would not have balanced the federal budget for decades.

As part of the deal putting off the debt limit showdown, the Democratic-run Senate made concessions of its own: It agreed to debate and pass a budget for the first time in three years. That exercise will force senators to commit themselves to politically distasteful spending cuts and tax increases that they previously had avoided.

Democrats, including President Barack Obama, say new tax revenues must be part of any eventual bipartisan budget accord.

"As we go forward to reduce the deficit, we need growth and job creation, we need spending cuts, we need revenue," Pelosi said during Wednesday's House debate.

Democrats say new limits on tax breaks that mostly go to high-income households could generate billions of dollars in revenue.

But Republican leaders, noting that Democrats achieved a 10-year, $600 billion revenue hike as part of the "fiscal cliff" compromise earlier this month, say further tax hikes are off the table.

The Republicans' "no new taxes" mantra has clashed many times with Democrats' vows to protect government programs. The result, for years, has been deficit spending.

The latest House and Senate decisions will merely heighten that debate.

Democratic senators, no longer able to sidestep budget details, are certain to renew their push for tax increases to accompany further spending cuts. And House Republicans have made their deficit-reduction goals harder to achieve by promising to balance the budget in 10 years instead of, say, 30.

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  • The Deficit Has Grown Mostly Because Of The Recession

    The deficit has ballooned not because of specific spending measures, but <a href="http://research.stlouisfed.org/fred2/graph/?s[1][id]=FYFSD" target="_hplink">because of the recession</a>. <a href="http://www.whitehouse.gov/omb/budget/Historicals" target="_hplink">The deficit more than doubled</a> between 2008 and 2009, as the economy was in free fall, since laid-off workers paid less in taxes and needed more benefits. The deficit then shrank in 2010 and 2011.

  • The Stimulus Cost Much Less Than Bush's Wars, Tax Cuts

    Republicans frequently have blamed <a href="http://projects.nytimes.com/44th_president/stimulus" target="_hplink">the $787 billion stimulus</a> for the national debt, but, when all government spending is taken into account, the stimulus frankly wasn't that big. In contrast, <a href="http://www.huffingtonpost.com/2011/06/29/cost-of-war-iraq-afghanistan_n_887084.html" target="_hplink">the U.S. will have spent nearly $4 trillion</a> on wars in the Middle East by the time those conflicts end, according to a recent report by Brown University. <a href="http://www.washingtonpost.com/blogs/fact-checker/post/revisiting-the-cost-of-the-bush-tax-cuts/2011/05/09/AFxTFtbG_blog.html" target="_hplink">The Bush tax cuts have cost nearly $1.3 trillion</a> over 10 years.

  • The Deficit Grew Under George W. Bush

    When George W. Bush took office, <a href="http://www.whitehouse.gov/omb/budget/Historicals" target="_hplink">the federal government was running a surplus</a> of $86 billion. When he left, that had turned into a $642 billion deficit.

  • The Deficit Is Shrinking

    <a href="http://www.whitehouse.gov/omb/budget/Historicals" target="_hplink">Last year's federal budget deficit</a> was 12 percent lower than in 2009, according to the Office of Management and Budget.<a href="http://www.whitehouse.gov/omb/budget/Historicals" target="_hplink">The deficit is projected to shrink</a> even more over the next several years.

  • Investors Are Paying Us To Borrow Money

    <a href="http://www.treasury.gov/resource-center/data-chart-center/interest-rates/Pages/TextView.aspx?data=realyield" target="_hplink">The interest rate on 10-year Treasury bonds</a> is <em>negative</em>, according to the Treasury Department. Investors are even paying us for 30-year Treasury bonds, when adjusted for inflation.

  • Investors Are Not Running Away

    <a href="http://www.businessinsider.com/niall-ferguson-has-been-wrong-on-economics-2012-8" target="_hplink">Conservative commentators</a> have been warning for years that investors will run away from Treasury bonds because of the national debt. So far it's not happening. <a href="http://www.huffingtonpost.com/2012/05/30/treasury-yield-record-low_n_1555975.html" target="_hplink">Interest rates on Treasury bonds</a> continue to hover at historic lows.

  • Health Care Reform Reduces The Deficit

    <a href="http://www.huffingtonpost.com/2012/09/04/republican-platform-2012-factual-mistakes_n_1840795.html#slide=1461142" target="_hplink">Republicans have blasted the Affordable Care Act</a> as "budget-busting." But <a href="http://www.huffingtonpost.com/2012/09/04/republican-platform-2012-factual-mistakes_n_1840795.html#slide=1461142" target="_hplink">health care reform actually reduces the deficit</a>, according to the Congressional Budget Office.

  • The U.S. Is Borrowing Less From China

    <a href="http://krugman.blogs.nytimes.com/2012/08/30/fear-of-china-syndrome/" target="_hplink">The U.S. government is borrowing much less from foreign countries</a> than before the recession, according to government data cited by Paul Krugman. That is because the U.S. private sector is financing our bigger deficits.

  • We Spend A Lot On Defense

    <a href="http://www.cbpp.org/cms/index.cfm?fa=view&id=1258" target="_hplink">Defense spending constituted 20 percent</a> of federal spending last year, or $718 billion, according to the Center on Budget and Policy Priorities. This adds up to <a href="https://twitter.com/AJInsight/statuses/241269134996959234" target="_hplink">41 percent of the world's defense spending</a>, according to Bloomberg TV anchor Adam Johnson. <a href="http://www.huffingtonpost.com/2012/07/19/mitt-romney-military-budget_n_1687601.html" target="_hplink">Mitt Romney has vowed</a> to not cut defense spending if elected president.

  • We Spend A Lot On Health Care

    <a href="http://www.cbpp.org/cms/index.cfm?fa=view&id=1258" target="_hplink">Health insurance, including Medicare and Medicaid, constituted 21 percent</a> of federal spending last year. In contrast, education constituted 2 percent of federal spending. Meanwhile, <a href="http://www.miamiherald.com/2012/08/19/2956609/middle-aged-blues-over-paul-ryans.html" target="_hplink">Mitt Romney and Paul Ryan have promised not to change Medicare</a> for Americans age 55 and older.

  • Republicans May Want Large Deficits For Now

    <a href="http://www.businessinsider.com/corporate-taxes-deficits-and-labor-vs-capital-during-reagans-first-term-2012-7" target="_hplink">The federal budget deficit ballooned</a> under Ronald Reagan, and that may be just the way Republicans like it. <a href="http://www.forbes.com/2010/05/06/tax-cuts-republicans-starve-the-beast-columnists-bruce-bartlett.html" target="_hplink">Some Republican thinkers</a> have proposed <a href="http://www.nytimes.com/2010/02/22/opinion/22krugman.html" target="_hplink">"starving the beast"</a>: that is, cutting taxes in order to use larger deficits to justify spending cuts later. Since Republicans ultimately want lower taxes and a smaller government, what better way is there to cut spending than to make it look urgent and necessary?