Shall We Repeal the Laws of Economics – Part III
The presenter links rising long-term Treasury yields to inflation, elevated oil prices, and large deficits, while arguing that buybacks may not resolve the forces pushing rates higher and could shorten the debt's maturity pattern. He sees U.S. default as unlikely because the debt is issued in dollars, but warns that persistent deficits and a rapidly growing interest bill cannot continue indefinitely. The discussion weighs the dollar's reserve role against confidence risks and contrasts crisis-era Fed expansion with deficit financing during prosperity. Faster growth could improve fiscal ratios, while shifting out of U.S. assets brings its own risks and may not pay off for a long time.
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With the 30-year Treasury yield closing above 5.3%, a 19-year high, Treasury increased the maximum size of long-dated buybacks from $2 billion to $4 billion and then $6 billion per operation. The presenter argues that buybacks may only temporarily affect prices and do not address the forces pushing rates higher.
The presenter links upward rate pressure to July PCE inflation of 3.7% versus the Fed’s 2% target, elevated oil prices associated with the war with Iran, and large deficits that can add demand when the economy is near capacity. He contrasts this with the 2008 Fed balance-sheet expansion, which he describes as a response to a financial-system emergency that largely offset crisis-era destruction of money and credit.
The presenter says buybacks do not reduce overall indebtedness and instead shorten the debt’s maturity pattern, requiring more frequent refinancing at prevailing rates; meanwhile, net interest outlays are projected to exceed $1 trillion. Warren Buffett also warned that the deficit is unsustainable over a very long period, though the timeline could be two years or 20.
DOLLAR
“As long as the dollar is the world's main reserve currency, it was involved in 89% of foreign exchange transactions in 2025 and accounted for 57% of allocated official reserves…”—
“As the Financial Times wrote on August 22nd, the Treasury's new attempt to depress bond yields is a signal that rather than tame spending, the US is prepared to distort…”—
“But the dollar was not durably debased against major currencies, and sustained high inflation did not follow…”—
FISCAL-DEBT
“While then candidate Donald Trump initially made some ambiguous comments about making a deal on US debt during the 2016 presidential campaign, I don't think there's a serious probability the…”—
“Fiscal policy is what scares me in the United States. We're operating at a fiscal deficit now that is unsustainable over a very long period of time…”—
YIELDS
“On August 17th, the yield on the 30-year US Treasury bond closed at over 5.3%. Then a 19-year high.”—
“Thus, on August 19th, in a move it described as intended to provide greater liquidity support in longer-dated securities, the Treasury announced it would at least double the maximum size…”—
“But the impact of your actions may be fleeting…”—
Treasury Yields And Buybacks
Marx argues that rising long-term Treasury yields reflect economic forces, and that expanded Treasury buybacks may temporarily lower yields without resolving their underlying causes.
Inflation, Deficits, And Rates
Marx links higher yields to persistent inflation, oil prices, large deficits, and strong demand for capital, while warning that buybacks can shorten the maturity of government debt.
U.S. Debt And Default Risk
He considers whether federal debt is sustainable, concluding that a conventional U.S. default is unlikely because the country can issue the dollars needed to make nominal payments.
The Dollar’s Reserve Role
Marx says the dollar is likely to remain the leading reserve currency for now, but excessive money creation and attempts to suppress yields could undermine confidence and weaken its purchasing power.
A Path To Fiscal Stability
He warns that rising debt and interest costs require action, proposing fiscal restraint, stronger revenues, and productivity-led growth to improve the debt-to-GDP outlook.
Portfolio Risks Beyond The Dollar
Marx advises against reflexively selling U.S. stocks, noting that alternatives carry risks and broad diversification away from dollar assets may not pay off for a long time.
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