U.S. Debt Surge Sparks Debate Over Extreme Monetary Tools
The U.S. national debt has exceeded $40 trillion, pushing long-term Treasury yields to their highest levels in over two decades. This surge in yields has intensified concerns about the government's ability to manage its growing interest burden, which now consumes approximately $1 trillion annually.
In response, policymakers are revisiting historical monetary tools such as 'Operation Twist' and 'Yield Curve Control (YCC).' Operation Twist involves selling short-term Treasuries to buy long-term ones, while YCC sets a ceiling on specific-maturity Treasury yields. However, these measures carry risks, including fueling inflation and transferring losses to bondholders.
The U.S. Treasury is currently increasing short-term bill issuance and conducting buybacks of existing Treasuries to improve market liquidity. Yet, analysts argue that these steps alone won't reverse the rise in long-term rates, given the persistent fiscal deficits and slow inflation deceleration. The AI investment boom is also contributing to higher rates, despite sluggishness in the housing and auto markets.
If conditions worsen, the Federal Reserve may need to intervene. The first option could be reviving Operation Twist to flatten the yield curve without expanding the Fed's balance sheet. However, meaningful intervention would require using the Fed's balance sheet, raising questions about the necessity and potential side effects of such actions.
If Operation Twist proves insufficient, YCC could be deployed as a more aggressive tool. This policy was used by the U.S. from 1942 to 1951 and by the Bank of Japan from 2016 to 2024. While YCC could ease the government's interest burden, it risks accelerating inflation if investors lose confidence in the dollar's purchasing power.
Experts highlight two potential paths forward: fiscal austerity or financial repression through artificial rate suppression. Historically, the U.S. has reduced its debt-to-GDP ratio through either high inflation or spending restraint. Today, the likelihood of an inflationary path that impacts bondholders is considered higher due to Congress's reluctance to cut spending or raise taxes.