On Friday, President Donald Trump announced his intention to impose tariffs on Canada in response to wildfire smoke affecting the United States. However, there is uncertainty regarding his legal authority to implement such measures. Questions remain about the legal mechanism he might use and how the administration would determine the tariff rates.

The White House has not provided answers to inquiries concerning the specific legal framework for imposing these tariffs or the methodology for rate calculation. In a post on Truth Social, Trump described the cost of the pollution as being “incalculable.”

Earlier this month, Trump met with Canadian Prime Minister Mark Carney during the NATO summit in Turkey. The potential tariffs have sparked discussions about their feasibility and possible impact on trade relations between the two countries.