Mexico's president suggested the U.S. is exaggerating the threat but the U.S. largely eradicated this particular pest in the 1970s.

Mexico exported just over one million head of cattle to the United States in 2024, according to official estimates.

The US has closed its ports of entry to Mexican cattle for fear of the parasitic, flesh-eating worm spreading north.

Mexico's president suggested the U.S. is exaggerating the threat but the U.S. largely eradicated this particular pest in the 1970s.