The US-Canada trade talks have collapsed after last-minute negotiations failed, leaving new 50% US tariffs on a broad group of Canadian goods and a promise of dollar-for-dollar retaliation from Ottawa. The phrase US-Canada trade talks collapse describes the failed negotiations and the tariff escalation now under way.

The Associated Press reported that the duties cover about $20 billion worth of Canadian imports and were imposed after the two governments failed to resolve disagreements before the deadline. The levies also affect some products that had previously been covered by the US-Mexico-Canada Agreement.

Canadian Prime Minister Mark Carney said Canada would match the US measures dollar for dollar beginning September 8. His government has described the new tariffs as an economic attack and said the negotiations were suspended because Washington added conditions Ottawa could not accept.

BBC reporting said the disputed issues included the treatment of Canadian-made vehicles, possible restrictions on Canada’s future trade agreements and protections linked to language, culture and sovereignty. US Trade Representative Jamieson Greer gave a different account and said Canada had introduced new demands during the talks.

The immediate effect will depend on the products covered by the tariff order, the availability of exemptions and the timing of Canada’s response. The trade relationship is significant for both economies, so companies and consumers may see price or supply effects as the measures move through customs.

Neither side has announced a new agreement. The present position is that negotiations are suspended, US duties are in force on the identified goods and Canadian countermeasures are scheduled to begin on September 8 unless the governments reopen talks.