For the first time in recent history, interest payments on the US national debt have surpassed military spending under the Biden administration, triggering warnings that the nation risks losing its status as a global power. According to Hoover economic historian Sir Niall Ferguson, this threshold violates what he calls Ferguson's Law, which states that any great power spending more on debt servicing than defense risks geopolitical decline.
Debt Burden Threatens National Security
The US Treasury's interest payments are projected to reach $1 trillion in 2026, consuming resources that could otherwise fund national security and other critical investments. Ferguson's analysis draws parallels to historical empires, such as 16th-century Spain and late 18th-century Bourbon France, where excessive debt financing undermined their global dominance.
Any great power that spends more on debt servicing than on defense risks ceasing to be a great power.
Historical Precedents and Current Concerns
While Ferguson notes that some nations, like Great Britain, navigated similar challenges by securing lower borrowing costs, the US faces growing economic pressures. Federal Reserve Chairman Jerome Powell has called for an 'adult conversation' about deficit levels, while financial leaders like Ray Dalio warn of an impending 'economic heart attack.'
The Committee for a Responsible Federal Budget highlighted that a 1 percentage point increase in interest rates could add $3.5 trillion to the national debt over the next decade. This underscores the urgency for policymakers to address the fiscal imbalance before it undermines America's strategic position and economic stability.