Tariff threats raise real economic risk

In January 2026, Donald Trump said he would hit Canada with a 100% tariff if Ottawa followed through on a trade deal with China, and Reuters reported the warning as a direct threat against “all Canadian goods and products” entering the United States. That landed hard because Canada was the United States’ second-largest goods-and-services trade partner in 2025, not a marginal supplier. (usnews.com) (congress.gov) A tariff is a tax collected at the border, but the first company writing the check is usually an importer, not a foreign government. The National Retail Federation said on March 9, 2026 that tariffs “drive up costs for businesses and prices for consumers,” which is why even tariff threats change pricing plans before a new duty is fully in place. (nrf.com) Canada sits inside U.S. production lines in a way most voters never see on a store shelf. A Congressional Research Service brief says Canada supplied 64% of U.S. crude oil imports by quantity in 2025, and Statistics Canada data cited in the same brief says 73% of Canada’s goods exports went to the United States in 2025. (congress.gov) That kind of trade is not mostly finished products moving one way. The Bank of Canada said in January 2026 that content sourced from the United States makes up about one-fifth of the total value of Canada’s exports back to the United States, which means parts can cross the border, get worked on, and cross again. (bankofcanada.ca) Autos are exposed because a car is assembled from thousands of parts, and North American factories have spent three decades treating the U.S.-Canada border more like a tollbooth than a wall. Reuters reported on January 24 that a 100% tariff on Canada would add pressure to metal manufacturing, autos, and machinery, which are exactly the sectors that depend on repeated cross-border shipments. (usnews.com) Retailers get hit differently, but not more gently. The National Retail Federation said U.S. container imports are expected to stay below year-earlier levels through the first half of 2026 because tariff uncertainty is already changing orders, and January port volume was 2.08 million twenty-foot equivalent units, down 6.4% from a year earlier. (nrf.com) Small businesses usually cannot absorb this kind of swing the way a giant chain can. When a family-owned machine shop, parts distributor, or specialty retailer has thin margins, a sudden duty, a customs reclassification, or a supplier reroute can erase the profit on an order that was priced weeks earlier. (bankofcanada.ca) (nrf.com) The damage is not only the tariff rate on paper. The Bank of Canada said overall Canadian exports in the third quarter of 2025 were 4% lower than before U.S. tariffs were imposed because uncertainty itself made some Canadian businesses and U.S. customers reluctant to do business with each other. (bankofcanada.ca) That is why tariff rhetoric can move currencies, inventory, and factory schedules even before customs officers collect more money. Companies start front-loading shipments, delaying contracts, hunting for alternate suppliers, and rewriting price lists, and each defensive move makes the supply chain slower and more expensive. (bankofcanada.ca) (nrf.com) The legal backdrop got even messier in February 2026, when the U.S. Supreme Court held that the International Emergency Economic Powers Act did not authorize the president to impose tariffs, according to the Congressional Research Service. The administration then ended those tariff actions and shifted to a 10% temporary import surcharge under Section 122 of the Trade Act of 1974, which told businesses that one tariff tool had vanished but the tariff risk had not. (congress.gov) So the real story is not one scary headline about one number. It is that companies building cars, buying aluminum, importing consumer goods, or relying on Canadian energy now have to treat political threats as operating costs, because in 2026 a tariff can begin as campaign language and end as a line item on an invoice. (congress.gov) (nrf.com)