The United States’ assertion that increased border enforcement with Mexico is diverting drug trafficking to Canada is being challenged by Kevin Brosseau, the U.S. fentanyl czar. Brosseau states that data does not currently support the claim of a significant increase in fentanyl trafficking originating from Canada. This pushback comes as U.S. officials suggest a redirection of criminal activity due to heightened security measures at the U.S.-Mexico border. Brosseau’s comments indicate a discrepancy between U.S. claims and available evidence regarding the source of illicit fentanyl. He maintains that the numbers do not demonstrate a substantial shift in trafficking patterns towards Canada. The situation highlights ongoing debate about the effectiveness and consequences of U.S. border policies and the origins of the fentanyl supply. Further analysis of trafficking data is needed to clarify the actual impact of border enforcement strategies.