US-Canada trade war threatens economic fallout in key midterm states
Border-State Businesses Face New Uncertainty as U.S.-Canada Tariffs Return
Tyunews.com – Businesses in northern U.S. states are watching a renewed tariff dispute with Canada closely, concerned that higher costs, weaker exports and fewer cross-border visitors could arrive just as competitive midterm races intensify.
The immediate national effect may be limited because the newest tariffs cover a relatively small portion of trade between the two countries. Yet communities near the Canadian border could feel the consequences more sharply. Their economies often rely on short-distance supply chains, nearby customers and regular travel across the border.
Fresh U.S. duties on $20 billion in Canadian products are expected to raise the cost of imports that include orchids and hockey sticks. Matching Canadian tariffs, which took effect Tuesday, could reduce demand for products sold by U.S. companies into Canada. Border-area tourism is another concern, since worsening political and trade tensions can influence travel decisions.
Maine Honey Seller Sees Tourism Risk
For Barters Island Bees, a Maine honey business offering varieties such as “Gentle Ginger” and “Blueberry Lemon,” the dispute is more than an abstract policy fight. Chief executive Garret Denniston said the company had expanded steadily until the earlier trade conflict disrupted business.
Sales declined last year after fewer Canadian visitors came through the farmers’ markets and fairs where the company sells its honey. Denniston said revenue has since recovered, rising 75% this year compared with the same period in 2025. He linked part of that rebound to a return of Canadian customers as relations seemed to improve.
“We thank Canadian tourists every time we see them,” Denniston said.
He worries that another escalation could reverse that progress and again discourage visits from Canada.
“I’m just astounded. It’s only reasonable to expect it will go back in the other direction.”
Asked whether the issue could affect Maine’s closely fought U.S. Senate race, Denniston was unequivocal.
“Oh, absolutely. It definitely can.”
Why Geography Matters
The United States and Canada have deeply connected commercial relationships, but the intensity of that connection differs widely by state. Canada is the leading overseas purchaser of exports from 26 states and the largest import source for 22 states, an RBC review of U.S. Census Bureau data found late last month.
Maine and Michigan are among the 10 leading states for combined yearly import and export activity with Canada. Ohio stands 15th on that measure. Montana, North Dakota and Minnesota also rank highly, placing several politically important states near the center of the dispute.
That concentration helps explain why a tariff applied to a narrow category of goods can create outsized pressure in particular regions. The recent measures apply to 6% of U.S. imports entering Canada and 5% of Canadian imports coming into the United States. Those percentages constrain the broad national impact, but they do not prevent focused disruption for companies that deal directly in affected products.
“Someone in Oklahoma doesn’t feel this as much as someone in Dearborn, Michigan,” said Jason Miller, a Michigan State University professor of supply chain management.
Dearborn sits at the heart of the U.S. auto industry, where manufacturers and suppliers have longstanding ties across North America. Miller characterized the different exposure levels as a matter of location. Companies closer to the border can more easily build regular relationships with Canadian buyers, suppliers and service providers, but that same proximity leaves them especially exposed when trade rules change.
“Business-to-business relationships still matter, and at the end of the day, the farther you have to transport something, the more challenging and expensive things are,” Miller said.
Auto Sector Already Under Pressure
Michigan’s automotive industry illustrates the stakes. The state’s vehicle makers and suppliers had already been dealing with tariffs imposed by President Donald Trump last spring, when imported cars and auto parts were hit with duties of 25%.
Those tariffs placed additional strain on an auto supply network that connects the United States, Mexico and Canada. Goods meeting the requirements of the United States-Mexico-Canada Agreement, known as USMCA, were excluded. Even so, auto-related imports generated $12.5 billion in duties last year, the Anderson Economic Group found.
Glenn Stevens Jr., executive director of the statewide MichAuto trade group, said Michigan’s powerful auto sector has already felt the effect of the president’s tariffs. A further deterioration in trade relations with Canada could add another layer of difficulty for an industry whose production and sourcing networks cross national borders.
For consumers, the effects may show up gradually rather than through a single, dramatic price change. Importers can face higher costs, exporters can encounter less competitive conditions abroad, and local retailers may see lower traffic if travelers decide to postpone cross-border trips. Each business will face different exposure depending on its products, suppliers and customers.
A Political Issue With Local Consequences
The tariff dispute is unfolding as voters prepare for November’s midterm elections, with Senate contests in Maine, Ohio and Michigan among the races that could help determine control of Congress. Trade policy can become especially visible in places where residents see its effects in their workplaces, storefronts and household budgets.
The current measures do not affect most commerce moving between the United States and Canada. Still, for a honey producer dependent on visitors, an auto supplier connected to Canadian manufacturing, or a retailer selling tariff-affected imports, even a targeted dispute can carry meaningful consequences.
Whether tensions cool or deepen will help determine how much of that risk becomes reality. In the meantime, businesses along the northern border are left planning around a relationship that is central to their local economies and unusually sensitive to changes in policy.
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