As the threat of 25 per cent tariffs on all Canadian imports persist, U.S. president-elect Donald Trump insists Canada should be cracking down on fentanyl making its way across the border, into his country.”I said you have to close up your borders … and drugs are pouring in,” Trump said recently.An Ontario border city mayor agrees with Trump — saying the drug is “destroying our communities” on both sides of the border.aiasst.ca is across the St. Clair River from Port Huron, Mich.Mayor Mike Bradley