The Intervention Nobody Wanted to Talk About Plainly
Last week the United States and Japan moved jointly to prop up the sagging yen. The mechanics of how they did it, however, are drawing more attention than the result.
In a Financial Times op-ed published Tuesday, University of California at Berkeley economist Barry Eichengreen dissected both sides of the operation and arrived at an uncomfortable conclusion: the maneuver was engineered specifically to avoid flooding an already-stressed Treasury market with more supply.
Two Sides, One Shared Fear
On the U.S. side, the New York Fed sold euros — not dollar-denominated assets — to purchase yen. That choice, Eichengreen argued, allowed Washington to sidestep asking financial markets to absorb additional Treasury securities at a moment when the federal government must finance a $2 trillion budget deficit this fiscal year.
The pressure on that market is not coming from Washington alone. AI hyperscalers are simultaneously selling large volumes of their own bonds, creating direct competition for investor demand. The combined tsunami of public and private debt has pushed yields higher, which in turn adds to federal interest costs and widens the deficit further — a self-reinforcing loop.
On the Japanese side, Tokyo did not sell its Treasury holdings either. Instead, Japan tapped an obscure Federal Reserve mechanism called the Foreign and International Monetary Authorities Repo Facility, which allowed the world's largest holder of U.S. debt to borrow dollars against its Treasury stockpile rather than liquidate it.
What the Workaround Reveals
'Both moves are an indication that the dollar's status as a reserve currency is not what it used to be,' Eichengreen wrote. 'Central banks hold U.S. Treasuries because they can be freely bought and sold and used in interventions. But not now, at least not in unlimited quantities.'
His bottom line was direct: 'Washington, fearing the consequences for U.S. financial markets, is reluctant to see foreign central banks use their dollar reserves. This is telling us that the dollar is not the attractive reserve currency it once was.'
Kieran Tompkins, senior climate and commodities economist at Capital Economics, added in a Friday note that by pressuring Japan to avoid selling dollar assets, the U.S. is effectively raising the relative appeal of holding gold. Central banks have been accumulating gold for years while reducing dollar reliance — driven by fiscal concerns, inflation risk, geopolitical hedging, and a desire to reduce exposure to U.S. sanctions that leverage the dollar's reach.
Tompkins predicted that the ability to conduct foreign-exchange operations without triggering U.S. concern 'could provide fresh impetus to central banks' demand for gold.'
Goldman Pushes Back
Not everyone reads the same tea leaves. Strategists at Goldman Sachs argued the opposite: Japan's use of the FIMA facility is a sign of dollar strength, not weakness. 'We believe Treasury's actions and the availability and utility of the FIMA facility help demonstrate that no one else can come close to competing with the U.S. dollar's usefulness, network effects, and supporting infrastructure right now,' Goldman wrote.
The CEO Times Read
The Goldman rebuttal deserves respect — the dollar's institutional infrastructure remains unmatched. But the Eichengreen argument cuts deeper than a single intervention. When the world's reserve-currency issuer engineers a workaround to protect its own bond market from its own allies, that is a signal the market will price over time, not ignore.
The $2 trillion deficit is not a rounding error. It is the structural condition that makes every Treasury sale a political event. Free-market principles demand honest accounting: a government that cannot afford to let its creditors sell is a government that has borrowed too much. The path back to unquestioned dollar dominance runs through fiscal discipline — not through clever repo facilities.
