WASHINGTON — Senate Democrats unveiled a largely stand-pat budget on Wednesday that calls for $1 trillion in new tax revenues over the coming decade and increases spending while protecting the party’s domestic policy priorities and adding $4 trillion more to the national debt than a slashing alternative from House Republicans.
The plan by Budget Committee Chairwoman Patty Murray of Washington blends about $1 trillion in modest cuts to health care providers, the Pentagon, domestic agencies, and interest payments on the debt with an equal amount in new revenue claimed by closing tax breaks.
But because Democrats want to restore $1.2 trillion in automatic spending cuts over the same period — cuts imposed by Washington’s failure to strike a broader budget pact — Murray’s blueprint increases spending slightly when compared with current policies.
On the other side of Capitol Hill, House Budget Committee Republicans barreled ahead with an opposite approach that whacks spending by $4.6 trillion over the coming decade and promises sweeping cuts to Medicaid and domestic agencies while setting a path to balancing the government’s books within 10 years.
The House panel was expected to approve the plan, by Chairman Paul Ryan, Republican of Wisconsin, by a party-line vote; Murray’s plan was set to be approved by the Democratic-led Senate panel on Thursday.
Both measures face floor debates next week.
Even as Democrats controlling the Senate and the strongly conservative House moved in divergent directions, President Obama again traveled to the Capitol to open a dialogue with lawmakers. Wednesday’s meeting was with House Republicans, who welcomed the gesture even as they noted that deep divisions remain.
‘‘We’ve got a big difference between us,’’ said Representative Greg Walden, Republican of Oregon. ‘‘He supports higher tax revenues.’’
But Representative Tom Cole, Republican of Oklahoma, said Obama told Republicans he also supports a revised inflation adjustment called ‘‘chained CPI’’ that would curb cost-of-living increases in Social Security benefits and increase tax revenue through slower indexing of income tax brackets.
He also supports ‘‘means testing’’ for Medicare benefits that would require higher-income beneficiaries to pay more for their health care.
Cole said Obama told them everyone needs to honestly confront the political barriers to reining in popular benefit programs like Medicare and Social Security.
‘‘He said, ‘Your people don’t want entitlement reform either. Go home and poll them,’ ’’ Cole said.
The White House praised the Senate plan.
‘‘The Senate Democratic budget is a concrete plan that will grow our economy and shrink our deficits in a balanced way, consistent with the president’s belief that our economy grows best from the middle out, not the top down,’’ White House press secretary Jay Carney said in a statement late Wednesday.
The debate in the Senate Budget Committee was the first time since 2009 that Democrats in charge of the Senate have advanced a budget blueprint, which opened to predictably poor reviews from the panel’s Republicans, who said it is heavy on tax increases and light on cuts to rapidly growing benefit and safety net programs.
‘‘Is it really possible that after four years, the majority has failed to identify any reforms? That all we have is just a tax-and-spend budget that makes no alteration to our dangerous debt course?’’ said the top Budget Committee Republican, Jeff Sessions of Alabama. ‘‘Does the majority believe the government is perfect and requires no reform?’’
At issue is the arcane and partisan congressional budget process, which involves a unique, non-binding measure called a budget resolution.
When the process works as designed — which is rarely — budget resolutions have the potential to stake out parameters for follow-up legislation specifying spending and rewriting the complex US tax code.
This year, it’s taken as a given that the Tea Party-driven House and Democratic-led Senate won’t be able to resolve their differences absent an agreement guided by the president.
Obama has had two failed rounds of talks with House Speaker John Boehner, Republican of Ohio, and now seems to be looking to the Senate as a potential partner with which to spark a potential breakthrough.