It's time to call out Mexico on stuff like this!

This is sad and Mexico must be held responsible:   

Nearly 200 people from Mexico and Central America were stuffed inside large trucks and caught trying to enter the United States illegally during three huge January smuggling busts that occurred in just nine days.
Officials in southern California said 77 people, including 5 children, were found near the Mexico border Monday packed inside a sweltering truck that had been painted to resemble a UPS truck.

It raises a couple of questions:

1) Who checks what goes out of Mexico?   Are there any controls in place on the Mexico side of the US-Mexico border?

2) Why isn't Mexico doing a better job controlling the human flow from Central America?    This is brutal.

Feel sorry for the poor people found in these trucks.   Nevertheless, it's time to publicly call out Mexico and demand more from their side of the border.