Why more fentanyl production could be moving to Canada

Since President Trump claimed fentanyl was flowing into the U.S. from Canada, authorities like Jonathan Caulkins warn that drug cartels might shift operations north if U.S. borders with Mexico tighten, despite evidence showing minimal fentanyl from Canada. Canada has responded with measures including increased border security and regulatory enhancements, while studies indicate most fentanyl entering the U.S. originates from Mexico.

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