President Donald Trump has expanded the United States trade dispute with Canada by ordering new restrictions on selected Canadian imports. The move follows fresh Canadian tariffs on about $20 billion worth of U.S. exports.
The White House said Trump signed five proclamations on September 8, 2026, under Section 338 of the Tariff Act of 1930. The measures target selected Canadian products and also change the scope of earlier tariffs.
Quick Fact
| Detail | Information |
|---|---|
| What happened? | Trump announced new import bans and tariff changes targeting selected Canadian products. |
| Where? | United States and Canada |
| When? | September 8, 2026 |
| Who is involved? | Donald Trump, the U.S. government, the Canadian government, and businesses in both countries. |
| Canada's response | Canada imposed new retaliatory tariffs on about $20 billion of U.S. exports. |
| Import bans begin | September 29, 2026 |
| Tariff changes begin | September 15, 2026 |
| Why it matters | The measures could affect cross border trade, exporters, manufacturers, farmers, and consumers. |
New U.S. Import Restrictions
The new measures include import bans covering selected Canadian products linked to disputes over alcoholic beverages and dairy. Separate action also addresses Canada’s treatment of the U.S. motor vehicle sector.
The White House says the import bans will begin on September 29, 2026. Other changes to the list of products covered by the Section 338 tariffs will begin on September 15.
Canada Responds With New Tariffs
Canada has imposed new retaliatory tariffs on about $20 billion of U.S. exports.
The affected American exports include steel, dairy products and agricultural equipment. The latest move adds to a growing trade dispute between the two North American neighbors.
U.S. Trade Representative Jamieson Greer said Canada walked away from trade negotiations and continued its retaliatory measures.
The United States is not simply adding new restrictions.
The administration is also changing the products covered by earlier Section 338 tariffs. Some products, including rock salt and cement, will leave the tariff list. Other products, including additional dairy products and all terrain vehicles, will be added.
The White House also says the Section 338 measures apply even when covered goods qualify under the United States Mexico Canada Agreement.
Canada Trade Fight Could Hit Businesses
The latest action could affect companies that depend on cross border trade.
Canadian exporters may face new restrictions when selling selected goods in the U.S. market. American businesses that export to Canada could also face higher costs if Canadian retaliation continues.
The dispute could also put more pressure on Washington and Ottawa to return to negotiations.
What Comes Next for Canada Trade
The first major date to watch is September 15, when changes to the tariff coverage take effect.
The new import bans are scheduled to begin on September 29. U.S. Customs and Border Protection will handle implementation of the restrictions.
The next step will depend on whether the two governments resume serious trade negotiations or continue expanding their respective measures.
The measures show that the disagreement remains unresolved. With additional restrictions scheduled to take effect later this month, businesses on both sides of the border will be watching closely for the next move.
