While American politicians focus on data centers, gas prices, and the Iran conflict during midterm campaigns, France's presidential race is grappling with a far more fundamental question: how to handle a towering national debt that now exceeds 116% of GDP. The contrast is striking. The U.S. national debt has hit $40 trillion, yet it barely registers as a campaign talking point. In France, however, the issue dominated a recent presidential debate, and one candidate has offered a radical solution that is capturing public imagination.

Jean-Luc Melenchon, the leader of the far-left France Unbowed party, is campaigning on a plan that sounds almost too simple: have the Bank of France cancel the 18% of French debt it holds. "All we have to do is take the 18% held by the Bank of France and chuck it in the fire," he has declared. The idea, he argues, would lighten the debt burden and allow the government to ramp up spending on social programs without resorting to austerity. Economic growth in France has been sluggish, and the AI boom that is supercharging America's GDP has largely bypassed the eurozone's second-largest economy. Melenchon's message is resonating with voters tired of belt-tightening; polls indicate he is on track to face far-right leader Marine Le Pen in the second round of next year's presidential election.

But the proposal has drawn sharp warnings from financial and political circles. France's own prime minister has cautioned that reneging on the debt would force the government to borrow at exorbitant interest rates, especially as it needs to raise more than $360 billion from bond markets this year. Melenchon insists his plan is different because it targets only central bank holdings, not private creditors. Yet at a recent campaign event, he hinted at a broader ambition. "Why did we make a single currency and an ECB together? We can do it, and I bet we'd find allies in Europe," he said, adding, "There is a debate — I'm not going after private creditors, not at this step in any case."

Germany's central bank chief, Joachim Nagel, who also sits on the European Central Bank's Governing Council, was unequivocal in his response. "No central bank in the Eurosystem nor the ECB is allowed to cancel national debt," he told French newspaper Le Monde. "This would constitute monetary financing of government, which is prohibited under the European treaties." The warning underscores the legal and institutional barriers to Melenchon's plan. Even if he were to win the presidency, any attempt to cancel debt would face fierce opposition from Germany and other eurozone members.

Meanwhile, bond markets are already pricing in risk. The yield on French 10-year bonds has risen to about 88 basis points above equivalent German yields, approaching the highest spread since the eurozone debt crisis in 2012. The spread is a key gauge of investor confidence, and Kristian Kerr, head of macro strategy for LPL Financial, noted that 90 basis points has historically acted as a ceiling during periods of fiscal stress. In a recent note, he warned that if the spread decisively breaks above that level, it could signal that investors view France's fiscal challenges as structural rather than cyclical. "That shift would matter well beyond France," Kerr wrote. "European and global sovereign debt markets remain highly interconnected, and a material deterioration in confidence toward French debt could easily spill over into other countries with weaker fiscal profiles."

Adding to the uncertainty is the lack of a parliamentary majority willing to support budget cuts. France's deficit stands near 5% of GDP, well above the European Union's 3% target, a source of persistent bond market anxiety. Melenchon's proposal, while popular with voters, does not address the underlying need for fiscal consolidation. Instead, it offers a one-time solution that, if implemented, could trigger a broader crisis of confidence in the eurozone's institutional framework. The coming months will test whether the electorate is willing to embrace such a gamble or prefers more orthodox approaches to managing the nation's debt.