Treasury bond selloff pushes 30-year yields toward 5% as debt worries grow

Global investors sold U.S. Treasury bonds in early September 2025, pushing the 30-year yield toward 5% as concerns mounted about the sustainability of federal debt issuance under ballooning deficits. The selloff reflected both domestic fiscal concerns tied to the budget impasse and international investor anxiety about the reliability of U.S. fiscal management under the Trump administration. Rising long-term yields threatened to increase the cost of federal debt service by hundreds of billions annually.