Mexico now the 'dominant source' for fentanyl in US, mainly comes through southern border, report finds

Mexico is now the dominant source for fentanyl coming into the United States, a new report released this week has found -- with most of the deadly drug coming in through the southern border.

"Since then, the dominant source of illegally sourced fentanyl has been Mexico," the report says. "The drug is manufactured in illegal laboratories there using precursors from Asia – mainly the PRC – and is trafficked principally by land into the United States."

The report says that fentanyl from Mexico is typically of very low purity but now accounts for almost all the fentanyl encountered by law enforcement since 2019. The report finds that fentanyl is trafficked "primarily across the southwestern border but also by passenger boat, cargo ship, train, commercial plan, drone and mail carrier."