President Donald Trump has claimed the GOP’s “Big, Beautiful” bill will put the U.S. on a sustainable fiscal path. Economists at Goldman Sachs say it won’t prevent the nation’s debt from surpassing levels only seen during World War II. The spending bill passed by House Republicans, combined with increased tariff revenue, will slightly lower the budget deficit when excluding interest payments, Goldman’s Manuel Abecasis, David Mericle, and Alec Phillips acknowledged in a note Tuesday. Coupled with rising borrowing costs, they said, the bill leaves the total deficit’s course essentially unchanged. “But that path remains unsustainable: the primary deficit is much...