President Donald Trump signed three proclamations on July 20 that invoke Section 338 of the Tariff Act of 1930, imposing a 50% duty on a broad slate of Canadian products. The measures, which cover automobiles, wine, cement, dairy and other goods, became effective at 12:01 a.m. on Wednesday.
The White House has highlighted the impact of what it calls Canada’s trade barriers, citing a $5.6 billion decline in U.S. auto exports and an 81 percent drop in alcohol sales. However, it has not provided a federal estimate of the cost that importers—or the American consumer—will bear as a result of the new duties.
Analysts question the lack of transparency
Phillip Magness, a senior fellow at the Independent Institute, suggested the omission may be intentional. He noted that prior studies of Trump‑era tariffs typically found that the bulk of the expense fell on U.S. importers and shoppers rather than on foreign exporters, a finding that runs counter to the administration’s narrative.
“I suspect the White House is extremely reticent to publish any study of its own that undermines this narrative – especially in an election year,” Magness told The Center Square.
Independent estimates point to billions in added costs
Two trade‑law scholars from Georgetown University, Peter Harrell and Jennifer Hillman, estimated the auto‑related proclamation alone covers roughly $19.3 billion in U.S. imports. Their calculation translates to about $10 billion per year in new duties—nearly twice the amount the administration claims Canada’s auto barriers are harming.
Harrell and Hillman also warned that the tariffs are likely to encounter legal challenges that could narrow their scope.
Legal backdrop and previous rulings
In February, the U.S. Supreme Court ruled 6‑3 that earlier tariffs imposed under the International Emergency Economic Powers Act were unlawful, prompting a refund process for about $166 billion collected from importers. Since then, the Trump administration has moved through a series of statutory authorities, including a Section 122 tariff later deemed unlawful by the U.S. Court of International Trade, Section 301 duties on 60 economies, and now the Section 338 measures.
Magness described the pattern as “statute‑shopping,” noting the administration’s reliance on multiple legal bases to impose trade barriers.
Government response
The Office of the United States Trade Representative and the Treasury Department declined to comment on whether any federal estimate of the tariffs’ cost to importers or consumers exists, or whether such an estimate will be released before the duties take effect.
Canadian perspective
Canadian Prime Minister Mark Carney, speaking from St. John’s, Newfoundland, said that both nations would have opportunities to discuss the measures before the deadline, though he offered few details on Canada’s stance. Carney described the negotiations as “very intense and delicate,” speaking in French during a phone call with President Trump on Monday.
Broader trade context
The White House fact sheet frames the tariffs as leverage, noting that the United States “did not agree to renew” the United States‑Mexico‑Canada Agreement in its existing form. The new duties are part of a broader strategy to pressure Canada on trade practices the administration deems unfair.
As the tariffs take effect, businesses that rely on Canadian imports will need to assess the financial impact, while consumers may see higher prices on a range of goods. The lack of an official cost estimate leaves many stakeholders uncertain about the full economic consequences.
Original reporting: KTBS 3 (Shreveport) — read the source article.
