US national debt passes $40tn after doubling in a decade BBCNational debt reaches grim $40 trillion milestone. Here’s why that matters CNNU.S. government debt passes $40 trillion, more than doubling in a decade cnbc.comUS debt crosses $40 trillion threshold after doubling under Trump and Biden ReutersU.S. Debt Hits $40 Trillion as America’s Borrowing Binge Continues The New York Times