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Budget math: Is too much 'off the table' to really fix US deficit?

With Republicans and Democrats taking tax hikes and half of US spending off the table, what's left is big whacks from defense and other discretionary items in the US budget. It's as if a family needs to stop deficit spending, but won't adjust its income, mortgage, or health care and retirement plans.

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For context, even after making $4 trillion in headway the US would still run deficits totaling perhaps $5 trillion over the next 10 years, but the deficit problem would decline when viewed as a share of the overall economy.

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Say you wanted to achieve that whole $4 trillion in progress through spending cuts, without touching Social Security, Medicare, or Medicaid. That would require major cuts, probably on the order of 15 percent, to all other parts of the budget.

That "other" part of the budget includes domestic discretionary programs, defense, and miscellaneous spending programs (such as farm subsidies) that Congress has made mandatory rather than subject to annual appropriations. All this spending is projected by the Congressional Budget Office to total some $21 trillion over the next decade.

The fiscal commission estimated that some of the fiscal progress in its $4 trillion total – about $700 billion worth – would come from reductions in expected interest on the debt. Following that logic, cutting about $3.3 trillion (or 16 percent) of that $21 trillion in projected spending might reach the target.
Note that if Congress decided some programs shouldn't be cut that much, the remaining spending cuts would have to go even higher.

Defense spending is an example – and not just a hypothetical one. National security accounts for nearly half of that $21 trillion in projected spending over the next decade. So if Congress decided to cut security spending by 5 percent, the remaining spending would face cuts of about 25 percent, to reach the target.

Many politicians in both parties are reluctant to cut military spending that much, warning of a possible erosion of national security.

In a hearing on the budget Wednesday, Defense Secretary Robert Gates talked about the tough choices the Pentagon confronts as it enters a likely era of tighter budgets. He said the nation will need to examine goals such as the longstanding notion that America should be able to fight two sizable wars at once, or other ways to reduce spending.

His comments came in response to a question about how to reach an Obama administration goal of $400 billion in defense cuts (a spending reduction of less than 5 percent) over a decade.

Overall, closing the budget gap without adjusting entitlement benefits or taxes would only become more difficult as America looks beyond a 10-year time horizon. That's because of the costs of baby-boom retirements and a related jump in interest costs on the debt.

The upshot of all this analysis: There's room to make some significant headway on the budget deficit by cutting miscellaneous things like farm subsidies, highway funding, and nonessential weapons systems. But that's probably just one piece of a larger puzzle.

For his part, Mr. Biden has said he's optimistic that the bipartisan talks will result in a deal to raise the national debt limit while cutting expected spending by more than $1 trillion. He didn't say over what time frame.

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