Never underestimate the fact that Mexicans really don’t like Central Americans.
Also, Trump made the point to Mexico that its own national sovereignty is being overthrown by these floods of people from other places streaming across Mexico. And they’re not just Central Americans, but Africans and Middle Easterners who get smuggled into Central America and then cross the border and head north.
The Mexicans themselves don’t like it and I think this is actually giving AMLO cover for getting more serious about his own border enforcement.
“Never underestimate the fact that Mexicans really don’t like Central Americans.“
Problem is, they don’t like us much, either.
Shooting anyone illegally crossing a border would work.