New Research Weighs Which US Cities Are Most Vulnerable to Trade War
A recent study by the Canadian Chamber of Commerce has shed light on the U.S. cities most at risk from escalating trade tensions between the United States and Canada. The research analyzed 41 American metropolitan areas, focusing on their economic reliance on Canadian trade. The findings reveal that cities with high export dependency on Canada face significant threats from tariffs and supply chain disruptions.
San Antonio, Texas, tops the list as the most vulnerable city. Nearly half of its exports are destined for Canada, with industries like automotive, aerospace, and petroleum refining playing a critical role in the local economy. Detroit, Michigan, follows closely, with 40% of its exports heading north. The city’s deep integration with Ontario’s auto industry makes it particularly susceptible to trade disruptions.
Kansas City, Missouri, rounds out the top three, with 40% of its exports, including cars, chemicals, and agri-food products, relying on Canadian trade. While these cities are among the most exposed, others like Houston and Chicago also rank as major exporters to Canada by value, with Houston alone shipping $18 billion worth of goods in 2023.
The study highlights a stark geographic divide. Northern states with historical trade ties to Canada are generally more exposed, but southern cities with robust rail, port, and highway networks also show significant trade intensity. This interconnectedness underscores the complex web of economic relationships between the two nations.
The tariffs imposed by the U.S. administration have added strain to this relationship. A 25% tariff on automobile imports, along with restrictions on steel and aluminum, has directly impacted Canadian exports. While the U.S.-Mexico-Canada Agreement (USMCA) provides some relief, concerns remain about tariffs on non-U.S. components used by North American automakers.
The trade war also carries political implications. Many of the most export-dependent cities are located in states that supported President Trump in the last election, such as Texas, Michigan, and Missouri. The economic fallout from trade disruptions could pose risks for the administration, as key voter bases in these regions may feel the impact.
While cities like Miami, San Diego, and San Jose are less reliant on Canadian trade, they are not entirely immune to the effects of the trade war. Their diversified economies may reduce the severity of the impact, but ripple effects such as job losses and weakened supply chains could still be felt.
The study serves as a reminder of the deep interdependence between the U.S. and Canada. For decades, this partnership has fueled economic growth on both sides of the border. However, the current trade tensions threaten to undermine these connections, putting millions of jobs and local economies at risk.
As policymakers navigate this challenging landscape, the research underscores the urgent need for strategies to mitigate the impact of tariffs and preserve the North American economic partnership. The fate of cities like San Antonio, Detroit, and Kansas City hangs in the balance, making it clear that the stakes of this trade war extend far beyond diplomatic negotiations.
Economic Vulnerabilities and the Ripple Effect of Trade Tensions
The study reveals that the economic risks posed by U.S.-Canada trade tensions extend beyond immediate export disruptions. Cities like San Antonio, Detroit, and Kansas City, which are heavily reliant on exports to Canada, face significant threats to their industrial bases. In San Antonio, nearly half of its exports are destined for Canada, with industries such as automotive, aerospace, and petroleum refining playing a pivotal role in the city’s economy. Similarly, Detroit’s deep integration with Ontario’s auto industry makes it particularly vulnerable, with 40% of its exports heading north. Kansas City, while slightly less exposed, still sees 40% of its exports, including cars, chemicals, and agri-food products, reliant on Canadian trade.
The tariff implications of the trade war are compounding these vulnerabilities. The U.S. administration’s 25% tariff on automobile imports, along with restrictions on steel and aluminum, has directly impacted Canadian exports. While the U.S.-Mexico-Canada Agreement (USMCA) offers some concessions, concerns remain about tariffs on non-U.S. components used by North American automakers. This has created a complex web of economic challenges, with supply chains and consumer confidence on both sides of the border being tested.
The political dimensions of the trade war add another layer of complexity. Two-thirds of the most export-dependent U.S. cities are located in states that supported President Trump in the previous election, including Texas, Michigan, and Missouri. This creates a politically sensitive situation, as the economic fallout from trade disruptions could alienate key voter bases in these regions. The administration faces a delicate balancing act in navigating these tensions while maintaining support in critical electoral states.
While cities like Miami, San Diego, and San Jose are less reliant on Canadian trade, they are not entirely immune to the effects of the trade war. Their economies, while more diversified and focused on global and service-oriented markets, could still experience ripple effects such as job losses and reduced economic activity due to weakened supply chains and Canadian consumer confidence. This underscores the interconnected nature of the U.S. and Canadian economies, where disruptions in one region can have far-reaching consequences.
The study also highlights the stark geographic divide in trade dependency. Northern states with historical trade ties to Canada are generally more exposed, but southern cities with robust rail, port, and highway networks also show significant trade intensity. This interconnectedness underscores the complex web of economic relationships between the two nations and the challenges of disentangling them without causing widespread harm.
As policymakers navigate this challenging landscape, the research underscores the urgent need for strategies to mitigate the impact of tariffs and preserve the North American economic partnership. The fate of cities like San Antonio, Detroit, and Kansas City hangs in the balance, making it clear that the stakes of this trade war extend far beyond diplomatic negotiations.

Conclusion
The escalating trade tensions between the U.S. and Canada have brought to light the vulnerabilities of several American cities that heavily rely on Canadian trade. Cities like San Antonio, Detroit, and Kansas City are at the forefront of this risk, with their economies deeply intertwined with Canada’s. The study by the Canadian Chamber of Commerce highlights the far-reaching consequences of trade disruptions, from supply chain issues to political implications.
While northern states with historical trade ties to Canada are more exposed, southern cities with robust infrastructure also face significant risks. The interconnectedness of the U.S. and Canadian economies underscores the urgent need for policymakers to develop strategies to mitigate the impact of tariffs and preserve the North American economic partnership. The fate of these cities and their economies hangs in the balance, making it clear that the stakes of this trade war extend far beyond diplomatic negotiations.
Frequently Asked Questions
Which U.S. cities are most vulnerable to the U.S.-Canada trade war?
San Antonio, Detroit, and Kansas City are among the most vulnerable cities due to their high dependency on exports to Canada. San Antonio leads with nearly half of its exports destined for Canada, followed by Detroit and Kansas City, each with 40% of their exports reliant on Canadian trade.
Why is San Antonio particularly vulnerable to trade disruptions?
San Antonio is highly vulnerable because nearly half of its exports go to Canada, with key industries such as automotive, aerospace, and petroleum refining playing a critical role in the local economy. This heavy reliance makes it highly susceptible to tariffs and supply chain disruptions.
How do tariffs impact the U.S.-Canada trade relationship?
Tariffs imposed by the U.S. administration, such as the 25% tariff on automobile imports and restrictions on steel and aluminum, have directly impacted Canadian exports. While the USMCA provides some relief, concerns remain about tariffs on non-U.S. components used by North American automakers, creating a complex web of economic challenges.
What are the political implications of the trade war?
Many of the most export-dependent cities are located in states that supported President Trump in the last election, such as Texas, Michigan, and Missouri. The economic fallout from trade disruptions could pose risks for the administration, as key voter bases in these regions may feel the impact.
Are cities with less reliance on Canadian trade completely safe?
Cities like Miami, San Diego, and San Jose, while less reliant on Canadian trade, are not entirely immune to the effects of the trade war. Their diversified economies may reduce the severity of the impact, but ripple effects such as job losses and weakened supply chains could still be felt.
Why is the U.S.-Canada trade relationship so important?
The U.S.-Canada trade relationship is crucial due to the deep interdependence between the two nations. For decades, this partnership has fueled economic growth on both sides of the border, supporting millions of jobs and local economies. Preserving this relationship is essential to avoiding widespread economic harm.