Peter Navarro, senior trade adviser to U.S. President Donald Trump, said Mexico had been "very cooperative" on efforts to crack down on the influx of fentanyl into the U.S., and Canada had started to understand that it needed to do more.

As part of negotiations with the U.S. on Monday, Canada will designate cartels as terrorist organizations, prompting criticism from Mexico's president.

An internal memo shows that Mexican cartels are ordering cartel members to attack Border Patrol agents with explosives and kamikaze drones.

A memo says cartels have sanctioned the use of drone explosives targeting CBP personnel and U.S. law enforcement officers.