Republican leaders and investors doubt Trump's plan to manage national debt with large tax cuts.

Republican senators, investors, and Elon Musk doubt President Trump's ability to manage the national debt with his proposed multitrillion-dollar tax cuts. Critics argue the plan will add over $5 trillion to the debt over a decade, despite Trump's promises of economic growth to offset costs. The national debt has surpassed $36 trillion, and higher interest rates may slow economic growth.