“Before the ink is dry on this bill, you will be pushing for $3.5 trillion in business tax cuts,” Representative Gwen Moore, Democrat of Wisconsin, said shortly before the final vote on the Fiscal Responsibility Act, as it is called, on Wednesday.
Those comments reflected a lesson Democrats took from 2011, when Washington leaders last made a big show of pretending to care about debt in a bipartisan deal to raise the borrowing limit. That agreement, between President Barack Obama and Speaker John Boehner, limited discretionary spending growth for a decade, helping to drive down budget deficits for years.
Many Democrats now believe those lower deficits gave Republicans the fiscal and political space they needed to pass a tax-cut package in 2017 under President Donald J. Trump that the Congressional Budget Office estimated would add nearly $2 trillion to the national debt. They have come to believe that Republicans would happily do the same again with any future budget deals — putting aside deficit concerns and effectively turning budget savings into new tax breaks.
At the same time, both parties have grown more wary of cuts to Social Security and Medicare. Mr. Obama was willing to reduce future growth of retirement benefits by changing how they were tied to inflation; Mr. Biden is not. Mr. Trump won the White House after promising to protect both programs, in a break from past Republicans, and is currently slamming his rivals over possible cuts to the programs as he seeks the presidency again.
All the while, the total amount of federal debt has more than doubled, to $31.4 trillion from just below $15 trillion in 2011. That growth has had no discernible effect on the performance of the economy. But it is projected to continue growing in the next decade, as retiring baby boomers draw more government benefits. The budget office estimated last month that debt held by the public would be nearly 20 percent larger in 2033, as a share of the economy, than it is today.
Even under a generous score of the new agreement, which assumes Congress will effectively lock in two years of spending cuts over the full course of a decade, that growth will only fall by a few percentage points.
Groups promoting debt reduction in Washington have celebrated the deal as a first step toward a larger compromise to reduce America’s reliance on borrowed money. But neither Mr. McCarthy nor Mr. Biden has shown any interest in what those groups want: a mix of significant cuts to retirement programs and increases in tax revenues.