the best gift we could mexico would be the return of their middle class. what we’re doing right now is returning mostly criminals who are making Mexico boil over in blood. return Mexico’s middle class and that country would have
a revolution that would do it some good.
Mexicans have the too-easy option of simply leaving their country, as opposed to staying in it and improving it.
Mass immigration from Mexico is thus not just welfare for the immmigrants who come to the U.S., but also for Mexico's rulers -- the population shift northward, as well as the resulting remittances which flow in from the U.S., ensure that their grip on power will remain tight.
The very few that we're returning aren't sufficient in number to cause the level of crime and violence that you're seeing there.