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U.S. debt is even worse than it seems, and rising Treasury yields are now an ‘all-hands-on-deck situation,’ top economist warns

Reported by Fortune
Sep 6, 2026· 3 min read
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Key Takeaways
  • • U.S. Treasury yields are rising despite weaker-than-expected economic data, signaling that fundamental demand for U.S. debt is deteriorating beneath surface-level market metrics, according to Robin Brooks, senior fellow at the Brookings Institution.
  • • The 10-year yield's anomalous behavior—moving higher when historical patterns suggest it should decline with slower economic growth—reveals "all-hands-on-deck" policy intervention, including Treasury Secretary Scott Bessent's doubled debt buyback program and Fed Chair Kevin Warsh's Jackson Hole credibility messaging.
  • • U.S. debt has reached $40 trillion and now rivals artificial intelligence as Wall Street's dominant concern, with Treasury market stress spreading globally to the U.K., France, Germany, and Japan as yields surge across developed economies.
  • • Rising geopolitical tension with Iran is elevating oil prices and worsening inflation expectations, compounding the already problematic yield environment independent of traditional economic slowdown signals.
  • • Weak demand for Treasury debt represents a structural challenge requiring urgent policy coordination, as the historical inverse relationship between economic weakness and falling long-term borrowing costs has broken down.
Summary
The U.S. Treasury market is exhibiting deeply troubling dynamics that suggest underlying demand conditions are far more fragile than surface-level yield movements indicate. Robin Brooks, senior fellow at the Brookings Institution, flagged this critical divergence in a Tuesday analysis, noting that rising 10-year yields despite consistent economic underperformance represents a reversal of historical market behavior and signals fundamental weakness in Treasury demand.

Typically, slower economic data and cooling inflation expectations drive long-term yields lower as investors seek safety and anticipate reduced future rate paths. However, recent weeks have delivered exactly this economic narrative—jobs data aside, economic releases have consistently fallen short of expectations—yet yields have continued climbing. This anomaly reveals substantial underlying upward pressure on Treasury rates, independent of traditional economic cycle dynamics. Brooks characterized this situation as an "all-hands-on-deck" crisis requiring coordinated policy response.

The policy establishment has responded visibly to these pressures. Treasury Secretary Scott Bessent has doubled the Treasury's debt buyback program, while Federal Reserve Chair Kevin Warsh delivered Jackson Hole remarks specifically calibrated to reassure markets regarding the Fed's inflation-fighting commitment. These moves reflect growing recognition that the U.S. debt market—now totaling $40 trillion—faces a critical juncture. The scale of accumulated federal debt has shifted from a peripheral concern to Wall Street's dominant focus, competing with artificial intelligence investment narratives for institutional attention.

Geopolitical factors have compounded yield pressures. Intensifying conflict with Iran, absent diplomatic resolution prospects, has driven oil prices upward and deteriorated inflation expectations precisely when policymakers need yields to stabilize. This combination of weakening Treasury demand, expanding debt loads, and external inflationary shocks has created a multidimensional challenge with limited policy tools.

The stress is not confined to U.S. Treasuries. Yields are surging simultaneously across major developed economies—the United Kingdom, France, Germany, and Japan—suggesting systemic pressure on developed-market sovereign debt rather than isolated U.S. vulnerability. This synchronized yield surge indicates broader structural concerns about global debt sustainability among world reserve currency issuers.

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Fortune U.S. debt is even worse than it seems, and rising Treasury yields are now an ‘all-hands-on-deck situation,’ top economist warns