Net interest costs on U.S. government debt exceeded $1 trillion in fiscal 2026, while the federal budget deficit approached $2 trillion, underscoring the growing strain of borrowing costs and government spending on the country’s public finances.  Net interest costs reached a record $1.05 trillion in the fiscal year ended Sept. 30, up more than 8% from about $970 billion in fiscal 2025, according to Treasury data. [...]