DETROIT — Canada’s new retaliatory tariffs on U.S. products took effect Tuesday, putting Michigan jobs, small businesses, manufacturers, farmers and potentially grocery bills directly in the middle of an escalating trade war with the state’s largest foreign customer.

For Michigan workers, the most immediate concern is jobs. Michigan exports support an estimated 230,000 jobs, including about 218,000 tied to manufacturing. Canada bought $23.2 billion in Michigan goods last year — nearly 40% of everything the state exported. If tariffs cause Canadian customers to buy fewer Michigan products, the consequences could eventually reach factory floors and payrolls.

But this isn’t just a Ford, General Motors and Stellantis problem.

Nearly 88% of the 13,631 companies exporting goods from Michigan locations are small and medium-sized businesses with fewer than 500 employees. That puts machine shops, plastics companies, electronics suppliers, food processors and thousands of other Michigan employers potentially in the line of fire.

Michigan agriculture is exposed, too. Agriculture and food production represent one of the state’s largest economic sectors, and Michigan exported an estimated $3.7 billion in agricultural products worldwide in 2024. Canada’s retaliation includes tariffs as high as 50% on some U.S. dairy products, 25% on many cheeses and tariffs on agricultural machinery and equipment.

The broader Michigan economy could feel the effects even without massive layoffs. Lost export orders mean less business for suppliers, trucking companies and other firms. Manufacturers and farmers facing weaker sales may postpone hiring, equipment purchases or expansions.

Michigan consumers could eventually feel some effects as well. Canada’s tariffs don’t directly raise prices in Michigan stores because they’re imposed on American products entering Canada. But an escalating cycle of U.S. tariffs and Canadian retaliation can raise costs throughout North America’s integrated supply chain, some of which can eventually reach consumers.

And Michigan appears to be one of Canada’s intended targets.

Canadian officials told Reuters that the retaliatory measures were designed in part to create economic and political pressure in competitive states including Michigan and Ohio ahead of the November midterm elections.

What Canada Just Tariffed

The new tariffs took effect at 12:01 a.m. Sept. 8 and cover C$27.6 billion — roughly US$20 billion — of American products.

Rates range from 15% to 50%.

Among the sectors particularly relevant to Michigan:

  • Steel and aluminum — critical to automotive and advanced manufacturing.
  • Dairy and cheese — some dairy products face tariffs as high as 50%, while many cheeses face 25%.
  • Agricultural equipment — certain machinery and parts face new tariffs.
  • Industrial machinery and robots — potentially affecting Michigan manufacturers.
  • Electrical equipment and appliances — a major Michigan export category.
  • Electronics — another important Michigan manufacturing sector.
  • Pulp and paper products — significant to Michigan’s forest-products economy.

Existing Canadian counter-tariffs on American automobiles also remain.

The problem for Michigan isn’t simply the number of products on Canada’s list. It’s how closely many of the targeted industries overlap with the state’s manufacturing and agricultural economy.

Could Families Pay More While Farmers Earn Less?

Agriculture illustrates one of the strange economics of a tariff war.

Suppose a Michigan dairy processor sells cheese to Canada. A 25% Canadian tariff makes that cheese more expensive for Canadian buyers, who may demand a lower price or find another supplier.

If American producers lose Canadian customers, more product can remain in the U.S. market, potentially pushing down the prices farmers and producers receive.

At the same time, tariffs elsewhere can raise the cost of machinery, replacement parts, processing, packaging and transportation.

That means farmers and food producers can potentially face lower revenue and higher costs at the same time.

Some of those higher costs may eventually be passed along to consumers.

The result sounds contradictory but is possible:

Michigan farmers could earn less while families pay more for some foods.

Not every food price would increase. Some could decline if lost exports leave additional supply in the domestic market. The larger concern is that a prolonged trade war makes both farm income and consumer food prices less predictable.

Autos Remain Michigan’s Biggest Risk

For Michigan, nothing in the trade fight may ultimately matter more than automobiles.

Michigan’s auto industry operates through a supply chain in which engines, transmissions, components and finished vehicles move repeatedly between Michigan and Ontario.

A component doesn’t necessarily cross the border once. Parts can move back and forth during several stages of production before a finished vehicle reaches a dealership.

That makes tariffs particularly disruptive.

And a potentially much larger threat is looming.

President Donald Trump has threatened to increase U.S. tariffs on Canadian cars, trucks and automotive parts to 50% beginning Jan. 1.

If that happens, Michigan’s automotive exposure could dwarf the impact of Canada’s tariffs taking effect Tuesday.

No Negotiations Underway

Canada says Tuesday’s retaliation followed the Trump administration’s decision to impose 50% tariffs on C$27.6 billion worth of Canadian goods beginning Aug. 22.

Ottawa describes its response as matching the American tariffs “dollar for dollar.”

Canadian Prime Minister Mark Carney acknowledged Tuesday that reducing Canada’s economic dependence on the United States will come with costs, but argued the country needs to diversify its economy and develop other markets.

More troubling for Michigan businesses: there currently are no negotiations underway between the two countries at either the ministerial or government-official level, a Canadian government source told Reuters.

That means there is no obvious path toward quickly removing the tariffs.

Could USMCA Be Next?

So far, one major economic firewall has limited some of the damage: the U.S.-Mexico-Canada Agreement.

Roughly 80% of Canadian exports entering the United States this year have continued moving duty-free because they qualify for USMCA exemptions, according to government data cited by Reuters.

But Canada’s latest retaliatory tariffs don’t provide those exemptions.

For Michigan, the stakes are enormous.

Canada and Mexico together purchased roughly two-thirds of Michigan’s exports last year, and nowhere is the three-country relationship more integrated than the automotive industry.

If the tariff confrontation begins undermining the North American trading system itself, Tuesday’s tariffs could ultimately look like the smaller problem.

Why Michigan Is In The Crosshairs

Canada’s tariff strategy isn’t purely economic.

It’s political.

Canadian officials told Reuters that the retaliation was designed partly to create pressure in politically competitive American states, including Michigan and Ohio, before the November midterm elections.

The strategy is to make the economic consequences of Trump’s trade policies visible to businesses, workers and voters in states that could help determine control of Congress.

That means Michigan isn’t simply collateral damage in an international trade dispute.

Canada wants politically important states such as Michigan to feel the economic pressure.

With Washington and Ottawa currently not negotiating, Michigan manufacturers, farmers, small businesses, workers and consumers may have to prepare for the possibility that Tuesday’s tariffs aren’t the end of the trade fight.

They could be the beginning of its next — and potentially more expensive — phase.