The U.S. Treasury Department’s effort to expand its long-term debt repurchase program has, in fact, escalated into a second intervention in weeks, and even this speed demonstrates the extent of market tension.

On August 19, the Treasury announced it would increase the maximum size of long-term bond repurchase operations from $2 billion per transaction to at least $4 billion, effective September 9 and lasting through the current refinancing quarter, until November 4. The target segments are ten- to twenty-year and twenty- to thirty-year bonds, a segment that has been experiencing what has been described as a buyer strike since late June. Secretary Bessent told CNBC the following day that even this figure might not be enough, suggesting repurchases could exceed $4 billion per transaction, adding that they have "a big toolbox," emphasizing that this was just a signal and that they believe yields do not reflect the fundamental realities of the Iran conflict.

The backdrop to this intervention is truly striking, as the US national debt surpassed $40 trillion this week, with $1 trillion of new debt added in just a few months. The yield on 30-year Treasury bonds had climbed to a nineteen-year high of 5.26% just before the repurchase announcement, before falling back to 5.18%. Interest expenses for this fiscal year have already reached approximately $1.2 trillion.

The financing mechanism here is also an important technical detail: this repurchase program is financed not through direct printing of new money, but through the sale of short-term Treasury bonds. This means that total debt is not decreasing, only the maturity structure is shortening. An analysis published in Forbes points out that this in itself poses a risk; as of the end of July, approximately 22.2% of the total $31.4 trillion in outstanding debt consisted of short-term bonds, exceeding the 15-20% range recommended by the Treasury's own advisory board. Each new bond-financed repurchase pushes this ratio even higher. Some economists argue this signals a phenomenon called "fiscal dominance," meaning the government's funding needs are beginning to shape monetary policy rather than its inflation outlook.

George Saravelos of Deutsche Bank described the move as a sign of the administration's growing unease about rising long-term yields, characterizing it as a form of "soft fiscal repression" alongside earlier yen support efforts that same month. Some strategists, however, emphasize that while the buybacks may slow the rise in yields, they don't address underlying fiscal and inflation concerns, as even a doubled $4 billion operation pales in comparison to the $31.4 trillion total market debt.

This development also puts new pressure on Fed Chairman Kevin Warsh, as Bessent's efforts to manage market interest rates with his own tools create tension with Warsh's stance that the market should set its own rates, despite the two institutions saying they will "work together" on the issue.

For those following macro liquidity developments through Gate, the key point to watch is the Treasury's next quarterly refinancing meeting on November 4th, which will clarify whether the size of the buybacks will be further increased. Meanwhile, it remains unclear when increasing reliance on short-term bond financing will cross a threshold for market stability, which remains a medium-term watch point for both traditional markets and risk-sensitive crypto assets.

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