America's capital crunch: Soaring debt collides with AI spending spree

Zoom in: President Trump said in 2016 that he could eliminate what was then roughly $19 trillion in national debt within eight years. On Tuesday, the debt crossed $40 trillion, after growing by $3 trillion in the past year alone.

• About $32 trillion is owed to investors and other outside holders. The rest is debt the government owes to its own accounts, including Social Security and other federal trust funds.
• Treasury must refinance $9.7 trillion in debt coming due this fiscal year while covering a deficit the Congressional Budget Office now projects at roughly $2.1 trillion.

That creates a punishing cycle: Old debt comes due, Washington replaces it with more expensive debt, and the resulting interest bill feeds future deficits.

• CBO projects annual deficits will average $2.4 trillion through 2036, pushing debt held by the public to 120% of GDP — above the record set after World War II.
• The U.S. has already spent $963 billion on interest in the first 10 months of this fiscal year, $200 billion more than it spent on the military over the same period.

Zoom out: For years, Silicon Valley's AI buildout was financed almost entirely with cash. Now Big Tech is becoming one of the biggest new forces in global debt markets.

• Bond sales by the "hyperscalers" building AI infrastructure are on pace to roughly double in 2026. Goldman Sachs projects debt will fund more than a third of their AI spending by 2027.
• Nvidia is working with BlackRock, Goldman Sachs, KKR and other Wall Street giants on plans to marshal more than $500 billion for AI infrastructure.

Stunning stat: Nine major tech companies have already spent roughly $600 billion on capital projects over the past year.

• A Wall Street Journal analysis found they have another $3 trillion in future commitments, mostly tied to AI, that aren't yet reflected on their balance sheets.

The big picture: America's debt burden is approaching the point where it starts reshaping household finances, presidential politics and the country's economic choices.

• Long-term Treasury yields have climbed to their highest levels since 2007, raising borrowing costs across the economy — from mortgages to business loans — and making Washington's own debt more expensive to refinance.

• Social Security's retirement trust fund is projected to run dry in late 2032, during the final months of the next president's first term.
• Medicare's hospital trust fund follows in the second quarter of 2033.

Between the lines: Trump and Elon Musk promised to break Washington's addiction to debt without forcing Americans to swallow painful sacrifices.

• Musk launched DOGE with ambitions of cutting as much as $2 trillion from federal spending. Its final public tally claimed just $215 billion in savings — barely a tenth of that goal.
• A federal audit released this month found billions in unsupported or inaccurate savings claims, including $27.4 billion tied to contracts that were still active.

What to watch: America's fiscal options are narrowing as its political ambitions expand.

• On the left, democratic socialism and economic populism are surging, pairing promises of cheaper housing, health care and child care with calls for higher taxes on the wealthy.
• On the right, the Trump-era GOP has protected Social Security and Medicare politically while pursuing tax cuts and higher defense spending, including Trump's push for a $1.5 trillion Pentagon budget.

The bottom line: Few problems loom larger over America's future than its colossal debt burden. Yet few are treated with less urgency by the politicians who will have to confront it.