How the deadly drug fentanyl became Canada’s public enemy No. 1

Fentanyl has become a dominant street drug in Canada, claiming thousands of lives. Recently, it has also been used by U.S. President Donald Trump to justify tariffs on Canadian exports. How did it get to this point? National Post reporter Tom Blackwell joins Dave Breakenridge to discuss the factors behind fentanyl's rise, the growth of labs in Canada, and Canada's role in the global market.

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