Is America Heading for a Debt Crisis? An Economist Explains

In this interview, economist and Substack writer Noah Smith explains how the United States has shifted from being a relatively low-debt country to a high-debt country compared to other wealthy nations, largely due to spending following the Great Recession and COVID-19. He outlines the debt spiral mechanism: as investors become less willing to buy government bonds, the government must offer higher interest rates, which increases its debt servicing costs, forcing it to borrow even more—potentially leading to a collapse of confidence in US debt.

Smith emphasizes that there is no hard threshold at which debt becomes dangerous; it is entirely psychology-driven, based on when institutions like banks, foreign governments, and individual investors decide to stop buying US bonds. This makes the situation particularly unpredictable and potentially subject to rapid, self-fulfilling panic. He notes that while the US benefits enormously from the dollar's reserve currency status, this status amplifies the catastrophic potential of a loss of confidence rather than simply protecting against it.

The conversation covers five potential escape routes from the debt situation: growing out of it, inflating it away, fiscal austerity, financial repression, and default/restructuring. Smith argues that austerity—a combination of spending restraint and broad-based tax increases, including on the middle class—is the most responsible approach, paired with allowing economic growth (potentially accelerated by AI) to erode the debt-to-GDP ratio over time. He criticizes both parties for avoiding necessary tax increases on the middle class.

Smith is sharply critical of Modern Monetary Theory, calling it neither modern, monetary, nor a theory, arguing it functions more like a guru-led pronouncement system with no transparent analytical framework. He also warns that Trump's likely instinct to use money printing for populist spending could set off hyperinflation, comparing the potential trajectory to Venezuela under Hugo Chavez, with JD Vance potentially left as an 'American Maduro' to deal with the consequences. The interview ends with Smith briefly touching on how smartphones have damaged society through three mechanisms: reducing human happiness, eroding democracy, and accelerating fertility decline.