Federal statistics show US border authorities seized 21,889 pounds of fentanyl in the 2024 fiscal year. Of that amount, 43 pounds were seized at the Canadian border — about 0.2% — compared with 21,148 pounds at the Mexican border, about 96.6%.

There’s no indication of any substantial change in the first three months of the 2025 fiscal year (October 2024 through December 2024). Of the 4,537 pounds of fentanyl seized by US border authorities during that period, 10 pounds, about 0.2%, were seized at the Canadian border, while 4,409 pounds, about 97.2%, were seized at the Mexican border.