MEXICO CITY — After years of confiscating rising amounts of fentanyl, the opioid that has fueled the most lethal drug epidemic in American history, U.S. officials are confronting a new and puzzling reality at the Mexican border.
Fentanyl seizures are plummeting.
The phenomenon has received little notice in Washington, where the Trump administration has made fentanyl-trafficking cartels a national-security priority. “Narcotics of all kinds are pouring across our borders,” said a White House statement in March, announcing stiff tariffs on Mexico and Canada.
