Rockefeller Capital CEO Greg Fleming Warns $40 Trillion U.S. Debt Threatens Economic Stability

Rockefeller Capital Management Chief Executive Officer Greg Fleming has identified the U.S. national debt—now surging toward $40 trillion—as the single greatest threat to American economic stability, warning that annual deficits running at 5% to 7% of gross domestic product during full employment are exerting persistent upward pressure on long-term interest rates.

Speaking with David Rubenstein on Bloomberg Wealth, Fleming highlighted a critical fiscal shift: federal outlays for interest payments on the national debt have now surpassed total U.S. national defense spending.

Official Treasury Department data confirms the shift, with net interest payments reaching $882 billion in fiscal year 2024 compared to $874 billion for defense outlays—a trajectory projected to push annual interest payments past $1 trillion in fiscal year 2026, up from $345 billion at the onset of the pandemic in 2020.

Debt held by the public crossed 100% of gross domestic product in April, marking the first time U.S. federal obligations have exceeded the size of the national economy since World War II. Analysis by Brookings Institution economist Jessica Riedl projects the ratio could climb to 137% within a decade, establishing a long-term fiscal imbalance without a wartime crisis to justify the trajectory.

Fleming, who manages over $200 billion in client assets at the firm originally established as John D. Rockefeller’s 1882 family office, noted that unchecked debt expansion presents severe challenges for Federal Reserve Chair Kevin Warsh as monetary policy intersects with unprecedented structural spending.

Although accelerating artificial intelligence deployment may offer disinflationary productivity gains—a trend highlighted by a St. Louis Fed study examining nearly 490,000 corporate earnings calls—Fleming noted that technological efficiency cannot independently neutralize elevated energy prices and deficit spending on long-term Treasury yields.

Concerns over government fiscal health are increasingly central among private wealth advisors, with a 2024 industry survey showing 48% of wealth managers rank national debt as America’s most urgent policy issue, rating it above tax legislation, immigration, and international conflict.