Foreign investors dump T-bills, Washington bets stablecoins can fill the gap

Foreign investors sent a net $133.5 billion into US financial markets in June, and then they turned around and sold $29 billion of Treasury bills. Those two numbers describe the same month, but they tell different stories about where global money actually wants to sit.

Chronology: two tides in one month

The Treasury International Capital data, released in mid-August, shows foreign buyers purchased $181.4 billion of US equities in June. Long-term Treasuries got just $6.8 billion of net buying. The short end, the bills that global cash managers use as a parking spot, saw outright selling to the tune of $29 billion.

So the money is still coming to America. It's just not coming for government debt anymore.

That's a meaningful shift. For years, foreign central banks and institutional investors bought US bills as the ultimate safe asset. The June data suggests that reflex is weakening. Japan and China, the two largest foreign holders, have been trimming their Treasury exposure for months, and the short end is where that shows up first.

Impact: Washington finds a new buyer of last resort

Here's where the stablecoin angle comes in. Washington has noticed that foreign demand for short-dated US debt is softening, and the policy response is taking shape fast: stablecoin issuers as a structural buyer of Treasuries.

The logic is straightforward. If Circle, Tether, and others must hold reserves backing their dollar-pegged tokens, and those reserves are mostly T-bills, then every dollar of stablecoin supply becomes a bid for US debt. The GENIUS Act, which passed the Senate in March, and the CLARITY Act in the House both require stablecoin issuers to hold high-quality liquid assets. Treasuries fit that bill perfectly.

Reading between the lines, this isn't an accident. Lawmakers designing stablecoin rules to mandate Treasury backing creates a captive buyer for US debt at exactly the moment foreign demand is fading. From a compliance standpoint, that's a clean solution to a messy problem.

The numbers matter here. Tether alone reported over $113 billion in Treasury holdings earlier this year. Circle adds more. As stablecoin supply grows, those figures grow with it. We're not talking about a niche corner of finance anymore.

But here's my strong opinion: this is a fragile foundation for the world's reserve currency. Banking your debt strategy on stablecoin issuers, whose entire business model depends on maintaining a peg, is a bet that those pegs never break. If one of them cracks, the Treasury market feels it instantly.

Outlook: what to watch next

The near-term test is regulatory. The House and Senate versions of stablecoin legislation still need to be reconciled, and the details of reserve requirements are where that gets contentious. Expect movement in the fall session.

Also watch the next TIC report. If foreign selling of T-bills accelerates in July and August, the urgency around stablecoin legislation only grows. If it stabilizes, the pressure eases and the pivot slows.

And there's a deeper question that should worry anyone paying attention: what happens to dollar dominance if stablecoins, not foreign central banks, become the marginal buyer of US debt? That's a transfer of power from states to private companies. The precedent here's important, and it's not at all clear it's a good one.

So the real question isn't whether stablecoin issuers can buy Treasury bills. They can, and they'll. The question is whether America wants to depend on them.