Your mortgage rate is, among other things, a function of what the U.S. government pays to borrow money. When that cost rises, so does yours. When a major ratings agency concludes that the government’s fiscal trajectory has deteriorated past the threshold that justifies its highest rating, the practical downstream effect touches every American who carries a mortgage, a car loan, a credit card balance, or a savings account earning interest on U.S. Treasuries. On May 16, Moody’s made that determination.
The downgrade from Aaa to Aa1 was the last major ratings action remaining. Fitch had already downgraded the United States in 2023. S&P had done so in 2011. Moody’s was the holdout, the agency that kept its top rating on U.S. sovereign debt through two decades of expanding deficits, rising debt service costs, and recurring legislative standoffs over the debt ceiling. When it finally moved, the reason it gave was not a new crisis but the accumulated weight of a trend it had been watching for years: government debt and interest payment ratios rising to levels significantly higher than similarly rated sovereigns, with no credible plan from any administration or Congress to reverse the direction.
Four days later, the House passed the One Big Beautiful Bill by a single vote.
The bill extends the 2017 tax cuts, increases defense and border security spending, and makes changes to Medicaid and other federal programs. The Congressional Budget Office and independent analysts have estimated that it would add roughly $3 to $4 trillion to the federal deficit over ten years. The national debt currently stands at approximately $37 trillion. Annual interest payments on that debt crossed $1 trillion last year for the first time in American history, representing approximately 13 percent of federal spending. Under current projections, interest payments would become the second-largest federal budget item behind Social Security.
The case for the bill is that economic growth, not austerity, is the mechanism for addressing the debt. The argument, advanced by Treasury Secretary Scott Bessent and others, holds that extending the tax cuts and incentivizing investment will expand the tax base, generate revenues that offset the nominal cost of the cuts, and produce a fiscal trajectory that looks worse on paper than it will in practice. This argument has precedent. It also has a track record that its proponents and critics dispute vigorously, and its conclusions depend on growth assumptions that budget hawks on both sides of the aisle have consistently questioned.
The case against is simpler and rests on arithmetic. Moody’s downgraded the United States not because of what any single bill does but because of what every successive administration and Congress has failed to do: agree on any measure that bends the deficit curve. The Big Beautiful Bill, in this reading, does not change the variable that caused the downgrade. It accelerates it. Maya MacGuineas, president of the Committee for a Responsible Federal Budget, called for policymakers to pause, reconsider, and develop a plan that actually addresses fiscal sustainability. She said this while the bill was still being debated. The House passed it anyway.
The distributional question is worth naming directly. The tax cuts at the center of the bill flow primarily to corporations and higher-income households. The spending reductions that partially offset them touch Medicaid and other programs whose beneficiaries are concentrated at the lower end of the income distribution. The debt service costs that Moody’s is now formally flagging will be financed through Treasury issuance that affects borrowing costs across the economy. The Americans most exposed to rising rates, because they carry the most variable-rate debt relative to their assets, are not the Americans most likely to benefit from the bill’s tax provisions.
Bond yields moved upward after the Moody’s announcement. The bill passed after that.
American business coverage at this level of structural analysis is one reason readers describe this publication as a standing reference. For more on the fiscal architecture behind these decisions, https://popularrationalism.substack.com carries the ongoing work.
