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Uncle Sam’s lack of leadership on debt cannot be ignored

I’m always amazed to hear people say that the national debt doesn’t matter because interest rates are low. Yet, it’s a common refrain on the left and sometimes on the right. The next step in that line of thinking is that if accumulating debt is so cheap, we shouldn’t think twice about spending more today without offsetting it with additional taxes or spending cuts. That’s wrong.

Debt is the symptom of too much spending. One unfortunate aspect of talking about the problem of accumulating too much debt (as opposed to too much spending) is that it opens the door to arguments that we should raise taxes to pay down the debt. So, let me say this from the start: In my opinion, the only acceptable way to address the debt that results from too much spending is to cut the said spending. It’s not only the right thing to do but also the most effective way to actually reduce the debt-to-GDP ratio, as a large body of academic literature has shown.

Admittedly, it’s true that so far, debt accumulation hasn’t resulted in a debt crisis, despite warnings from people like me that it could happen any minute now. But that doesn’t mean that the crisis will never happen. It may simply take longer for investors to lose trust that the government will repay its loans. I suspect that other nations like France and Germany will face a crisis before we do, yet it’s only a matter of time for us, too.

Now let me discuss some of the most misguided aspects of the argument that low interest rates give legislators an excuse to spend without restraint or tax offsets. The first and most obvious is that spending, and as a result, the debt, is already scheduled to grow quickly. Adding more spending to the mix is misguided considering that even if interest rates were to stay low, accumulating debt remains expensive. In fiscal year 2020, Uncle Sam spent $345 billion on interest payments, which is more than we’re spending on the Departments of State, Education and Homeland Security in fiscal year 2021 combined.

This is just the beginning, assuming no new wars or major recessions or expensive new federal initiatives — and with a minimal increase in interest rates, the Congressional Budget Office estimates that 8.6% of GDP, or about $5 trillion, will go toward interest payments in 2051. That will be roughly 27% of our fiscal year 2050 budget (up from 8% today) and over 40% of the federal government’s fiscal year 2050 revenue. At that point, interest payments will be the largest government expenditure by far. This significant growth in interest payments as a portion of the budget will come at the expense of other budget items that people genuinely value.

There’s also the fact that high debt levels slow economic growth. Assuming we never face a full-on debt crisis like the one we have seen play out in Greece, we’ll then face the unfortunate yet increasingly likely scenario of becoming like not-much-growth Japan. At least 40 academic studies published since 2010 observe the debt-growth relationship. They find that while threshold levels for advanced economies vary from 70% to 100% of debt to GDP, the negative effect of large and growing public debt levels does actually have serious negative effects on economic growth.

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