Trade Imbalance Reappears: A Structural Threat to the Global Economy

When Imbalance Takes Center Stage

At next week's G7 summit in the French Alps, U.S. President Donald Trump will once again push a familiar topic to the forefront: America's massive trade deficit. According to the *Wall Street Journal*, the French hosts plan to put "global imbalances" on the formal agenda—namely, the U.S. current account deficit and the corresponding surpluses of economies such as China, Europe, and Japan. This marks the international community's renewed serious examination of trade imbalances since the 2008 financial crisis.

More Than Just a Numbers Game

The current account balance is a mirror of a country's saving-investment relationship with the rest of the world. The U.S. deficit means its consumption and investment exceed domestic savings, forcing it to borrow capital from abroad; China's surplus reflects excess savings and an export-oriented growth model. Currently, the U.S. merchandise trade deficit continues to widen, while the surplus balances of China, Germany, Japan, and others remain substantial. Unlike before the crisis, the root causes of imbalances are no longer merely the binary structure of Asian export orientation and Western overconsumption. They are now compounded by factors such as supply chain restructuring, technology controls, and geopolitical fragmentation.

Historical Lessons and Current Variations

Global imbalances in the mid-2000s were once seen as systemic risk—large amounts of capital flowing from surplus to deficit countries, eventually culminating in the collapse of the U.S. subprime mortgage crisis. Today, imbalances are expanding again, but the context has changed. On one hand, the U.S., through industrial policies like the Inflation Reduction Act and chip subsidies, is attempting to bring manufacturing back home, but in the short term, this actually boosts import demand. On the other hand, China is undergoing a difficult transition from export-driven growth to internal rebalancing, yet its manufacturing overcapacity remains unabsorbed, keeping its export surplus high. Meanwhile, the structural foundations of current account surpluses in the EU and Japan are also weakening due to energy price shocks and aging populations.

Back on the Agenda: Protectionism or Coordination?

The Trump administration tends to blame deficits on unfair foreign trade practices, so the risk of tariffs and sanctions always looms. However, economists generally believe that global imbalances reflect more a lack of domestic savings and fiscal expansion than pure currency manipulation. If the summit merely descends into mutual recrimination, it could lead to deeper trade friction and damage already fragile global supply chains. Historical cooperative paths—such as the 1985 Plaza Accord to coordinate exchange rate adjustments—are now difficult to replicate due to multipolarity and a lack of trust.

Three Dimensions of Structural Threat

First, financial stability. Persistent imbalances mean a one-directional flow of global capital; once investor confidence wavers, it could trigger sharp exchange rate fluctuations or a reversal of capital flows. Second, policy rifts. Deficit countries will intensify protectionism, while surplus countries face currency appreciation pressure and the pain of industrial transformation, narrowing policy space for both sides. Third, long-term growth. When imbalances are driven by structural factors (such as demographics or savings propensity), simple devaluation or tariffs cannot cure them, and may instead harm the efficiency of global resource allocation, dragging down productivity growth.

Looking Ahead: The Game in an Era of ImbalanceAs AI and the green transition reshape comparative advantages in trade, the pattern of global imbalances may shift. Trade in services and digital flows could partially offset the imbalance in goods trade, but geopolitical competition is accelerating technological decoupling, disrupting this natural adjustment process. It remains unclear what consensus the G-7 summit can reach, but if pragmatic dialogue cannot be initiated, the structural cracks in the global economy will only be further torn apart by the blame game.