Prime Minister Mark Carney and U.S. President Donald Trump spoke by phone on Tuesday, one day after Trump announced a new round of tariffs on Canadian goods set to take effect August 19. The Globe and Mail

Carney told reporters about the call. "I've spoken with the president, we agreed to intensify discussions, we'll begin that right away," he said. The Globe and Mail

The new tariffs target Canadian alcohol, dairy products and a range of other goods. They will not include an exemption for goods trading under the U.S.-Mexico-Canada Agreement (CUSMA). The Globe and Mail

Trump invoked Section 338 of the Depression-era Tariff Act to impose the levies, a provision that had never previously been used. The Globe and Mail reported the tariff rate at 50 per cent. The Globe and Mail

The tariff announcement follows a July 20 in-person meeting between Trump and Carney described as a "sitting," after which Trump threatened tariffs over wildfire smoke. CTV News

When asked whether the Monday tariffs fulfilled his wildfire threat, Trump signalled additional tariffs may still be imposed on Canada over forest fires. "That's separate. We're looking at that separately," he said. The Globe and Mail

Carney stated Canada would consider retaliatory tariffs only if the tariffs threatened by Trump are actually imposed. The Globe and Mail

Dominic LeBlanc serves as Minister for Canada-U.S. Trade in the Carney government. The Globe and Mail

Carney said he would speak with premiers meeting in Charlottetown, P.E.I., and would join them there for events and meetings on Wednesday and Thursday. The Globe and Mail

The broader context here is the intersection of two distinct but overlapping U.S. trade actions. The Monday tariffs, imposed under a previously unused Depression-era statute, are a concrete trade measure with a fixed implementation date of August 19. They hit specific sectors, including dairy and alcohol, and notably bypass the CUSMA framework that has governed trilateral trade since it replaced NAFTA. The wildfire smoke tariffs, by contrast, remain a conditional threat that Trump has explicitly separated from the current levies.

For the Carney government, the immediate task is managing a multi-track response. The decision to condition retaliatory tariffs on actual implementation, rather than mere announcement, preserves Canadian flexibility. It also buys time for the intensified discussions Carney referenced. The involvement of LeBlanc as the dedicated Canada-U.S. Trade minister signals that the file is being run through a specialized channel rather than general foreign affairs.

The federal-provincial dimension is also in motion. The premiers are already gathered in Charlottetown, and Carney's plan to join them Wednesday and Thursday means the tariff response will be co-ordinated through the Council of the Federation rather than crafted solely in Ottawa. Provincial exposure to the tariffs will vary considerably, with dairy and alcohol producers in Quebec, Ontario and the Prairies facing the most direct impact. The 50 per cent rate, if implemented at that level, would represent a substantial barrier to those sectors' access to the U.S. market.

The invocation of Section 338 of the Tariff Act introduces a legal novelty. The fact that the provision had never been used means there is no established administrative record or judicial interpretation of its scope. This gives the intensified bilateral discussions an unusual character: they are not merely negotiating around a known trade instrument but are engaging with a legal mechanism whose boundaries remain untested. The absence of a CUSMA exemption further complicates the framework, as it removes the predictable tariff-free lane that the agreement was designed to provide for qualifying goods.