Going long on him, just eat a little and run. The issue with U.S. national debt primarily stems from the federal government's long-term fiscal deficit, leading to a continuous increase in the scale of national debt. As of 2025, the total national debt has exceeded $35 trillion, accounting for more than 120% of GDP. High debt levels increase interest burdens, with interest expenditures in FY 2024 expected to be nearly $1 trillion, crowding out other public spending. The Federal Reserve's interest rate hikes have raised borrowing costs, further exacerbating pressure. The cyclical disputes over the national debt ceiling have triggered market uncertainty and increased default risks. In the long term, an aging population and rising Social Security expenditures pose challenges to fiscal sustainability. Without reforms such as tax increases or spending cuts, high debt could threaten economic stability and even trigger turmoil in global financial markets.