President Donald Trump on Friday vowed to confront Canada over the North American wildfires that have enveloped swaths of the United States in a smoky haze.

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Calling the situation “totally unacceptable,” Trump accused Ottawa of failing to adequately address the situation, which has sent air quality to dangerous levels in major U.S. cities for multiple days.

The costs inflicted on the U.S. “must of necessity be added to the TARIFFS Canada is currently paying,” Trump wrote in a Truth Social post.

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Trump added that he plans to call Canadian Prime Minister Mark Carney later Friday “to find out what they are going to do about it.”

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