Part two of a series. Part one examined the AI debt cycle. This column asks who funds it — and at what price to the system itself.
Last week I argued that America has bet its economy on artificial intelligence. This week I want to make an uncomfortable claim about the other side of that ledger: the United States, guardian of free capital markets for eight decades, has quietly begun to manage them. Not with the crude instruments of an emerging market — not yet — but with a sophistication that makes the drift easier to miss. The twist is this: the world's most market-driven financial system is being re-engineered by the state, and the re-engineering is being marketed as innovation.
Consider the sequence of events this summer, each unremarkable alone, remarkable together.
On July 31, the US Treasury joined Japan in buying yen — the first coordinated intervention since 2011 — after the currency slid toward a four-decade low near ¥164. On August 19, with the 30-year Treasury yield touching 5.34 per cent, its highest since before the financial crisis, the Treasury announced expanded buybacks of long-dated bonds. Two days earlier, it had proposed the licensing regime that will, from January 2027, formalise dollar stablecoins as regulated instruments — instruments whose reserves must, by law, be held in US government debt. And the CFTC opened proceedings to treat computing power itself as a tradeable commodity.
What do these have in common? Each is a state intervention in the price or plumbing of capital. Together they sketch the architecture of what economists politely call financial repression: the use of the financial system to hold down the sovereign's borrowing costs. Nicolas Colin and Marieke Flament, whose Currency of Power newsletter has tracked this drift with admirable persistence, compare the moment to the Nixon Shock of 1971 — the last time America rewrote the rules of global money because the old rules had become unaffordable. The comparison is not hyperbole. It is arithmetic.
The arithmetic is as follows. The US runs a deficit of roughly $1.8tn on a public debt stock of 122 per cent of GDP. The market's verdict on this trajectory is written in the term premium: the Federal Reserve has held short rates, yet the long end has marched to two-decade highs. Investors are not confused. They are demanding compensation for fiscal risk. A government facing that verdict has three options: fiscal consolidation, which requires confronting every constituency that feeds on cheap borrowing; default or inflation, which are unthinkable until they are not; or managing the bond market itself. Washington, without announcing it, is testing the third.
Hence the yen episode, which was less an act of alliance than of self-defence. Japan holds some $1.2tn of Treasuries — the largest foreign stockpile. Had Tokyo defended its currency the conventional way, by selling those holdings, the supply would have landed on a Treasury market already straining under record issuance. So Washington intervened to spare its creditor the need to sell — reportedly funding the operation by offloading roughly 40 per cent of its euro reserves, with the ECB informed after the fact. The lender of last resort has become, in effect, the borrower of first resort, managing its creditors so that they never have to test the exit. Europe, as usual, absorbed the cost and issued a communiqué.
Hence, too, the stablecoin strategy — and here is where the twist sharpens. Financial repression, in its twentieth-century form, trapped domestic savings at home: capital controls, regulated deposit rates, captive pension funds. The American innovation is repression in reverse. Rather than caging its own savers, Washington is building a machine to conscript everyone else's. Every dollar stablecoin issued under the new regime is, by statutory design, a claim backed by Treasury bills. Tether alone — now bearing, since August, a clean audit from KPMG showing $6.8bn of excess reserves — has become one of the larger buyers of US government debt on earth. The Treasury secretary has been admirably frank that the purpose is to cement the dollar's reserve role. Translated: the fiscal deficit has found a new distribution channel, and it runs through every smartphone in the emerging world. The savings of a shopkeeper in Lagos or Manila, fleeing a weak local currency, now flow — via a token — into the US bill market. It is the exorbitant privilege, digitised and franchised.
Yet three forces push against this elegant machine.
The first is the competition I described last week. The AI complex is issuing investment-grade debt at a pace approaching a fifth of total supply, absorbing duration precisely as the Treasury needs it most. The state and Silicon Valley are now rival claimants on the same pool of global savings. Financial repression and an investment boom are awkward roommates: suppress yields for the sovereign, and you subsidise the very borrowing binge that crowds it out.
The second is the pushback abroad. Beijing is patiently building the alternative — Deutsche Bank's appointment in August as Europe's first RMB clearing bank opens payment routes around both the dollar and SWIFT, while the People's Bank demonstrates, with its 10-year yield anchored near 1.7 per cent, exactly how thoroughly a determined state can command its bond market. Meanwhile the ECB warns of "currency substitution", Brazil folds digital assets into its exchange controls, and half of Asia is fencing its monetary borders against the digital dollar. The borderless dollar is colliding with bordered sovereignty, and sovereignty is winning on points.
The third force is the strangest: it sits inside the administration itself. One faction — Wall Street's — regards dollar primacy as the family business, non-negotiable, and sees stablecoins as a vacuum cleaner for global capital. Another, associated with the vice-president, has revived the old argument that reserve-currency status is a resource curse: it overvalues the dollar, hollows out industry, and — crucially — removes the discipline that would otherwise force fiscal restraint. One project seeks to expand the debt machine; the other to unplug it. A government cannot forever pursue both. In brief: America is fighting over whether its privilege is a privilege at all.
Where does this end? I do not know, and I distrust anyone who claims to. But history offers a warning worth stating plainly. Financial repression is a ratchet. Managed yields make government debt unattractive, which encourages capital to leave, which necessitates controls on capital, which entrench the managed yields. Each intervention creates the conditions for the next. The US is at the top of that staircase, taking what it insists are isolated steps. The dollar system will not collapse — systems this large do not collapse; they transform, slowly, and then are found one morning to have become something else. The 1970s reset took fifteen years and was visible only in retrospect. Thus my unfashionable conclusion: the most important financial story of this decade is not artificial intelligence. It is that the price of American debt is ceasing to be a market price. Everything else — the AI boom included — is being built on top of that quiet fact. Alas, foundations are the last thing anyone inspects, and the first thing that fails.