The Congressional Budget Office has a tough job: to provide America’s lawmakers with a reality check on their tax and spending plans. Not surprisingly, the CBO’s projections are not always received cheerfully. Both President Obama and leading congressional Democrats were less than thrilled when the CBO estimated that the costs of universal health coverage would be much higher than advertised. To be sure, projecting the cost of legislation involves making assumptions and constructing models that may or may not prove accurate 10 years down the road. Nonetheless, the CBO, with its tradition of scholarly independence, is the best available arbiter, and Congress must heed its numbers — like them or not.

Now comes the CBO with yet more news of the sort that neither Capitol Hill nor the White House is likely to welcome: its freshly released report on the federal government’s long-term financial situation. To put it bluntly, the fiscal policy of the United States is unsustainable. Debt is growing faster than gross domestic product. Under the CBO’s most realistic scenario, the publicly held debt of the U.S. government will reach 82 percent of GDP by 2019 — roughly double what it was in 2008. By 2026, spiraling interest payments would push the debt above its all-time peak (set just after World War II) of 113 percent of GDP. It would reach 200 percent of GDP in 2038.

This huge mass of debt, which would stifle economic growth and reduce the American standard of living, can be avoided only through spending cuts, tax increases or some combination of the two. And the longer government waits to get its financial house in order, the more it will cost to do so, the CBO says.

The CBO’s new long-term forecast is considerably more pessimistic than the one it issued 18 months ago, mostly because of the recession, which has driven the budget deficit above 12 percent of GDP. But the report makes clear that the recent economic downturn did not cause the government’s predicament and that the situation will not necessarily improve once the economy does. The principal cause of long-term fiscal distress is the aging of the U.S. population, coupled with rising health-care costs — which, together, will drive spending on Medicare, Medicaid and Social Security to new heights. Unchecked, federal spending on Medicare and Medicaid combined will grow from almost 5 percent of GDP today to almost 10 percent by 2035 — and to more than 17 percent of GDP by 2080.

Like his predecessors, Mr. Obama is aware of this issue. Like them, he has promised a plan to deal with it. And like them, he has not come up with anything credible yet. It’s time for that to change.

The Washington Post