Debt Shift Exposes Treasury Complacency as Rates Climb to 3.4 Percent

The Atlantic newsletter documents the pivot among economists who previously tolerated high debt when GDP growth exceeded borrowing costs. Data from the Congressional Budget Office now projects the One Big Beautiful Bill Act adding $4.7 trillion to deficits through 2035, with immigration restrictions contributing another $500 billion. This reversal occurs without corresponding tax increases or spending reductions from either party. Institutional incentives favor short-term fiscal expansion over long-term solvency, as evidenced by the 2025 credit downgrade and sustained demand for higher 30-year yields. The pattern reveals how congressional budgeting rules reward deficit expansion while shielding lawmakers from immediate voter costs. Rising yields transmit directly into higher mortgage and student-loan rates, converting abstract fiscal metrics into household constraints without requiring explicit policy acknowledgment.