Illegal Immigration

Victor Davis Hanson is the first author I’ve seen ask this question concerning Mexico.

First quoting President Fox:
“Shameful,” screams Mexico’s President Vicente Fox, about the proposed extension of a security fence along the southern border of the U.S. “Stupid! Underhanded! Xenophobic!” bellowed his Foreign Secretary Luis Ernesto Derbez, warning: “Mexico is not going to bear, it is not going to permit, and it will not allow a stupid thing like this wall.”

He asks why doesn’t Mexico, with resources both natural and human fix their country so that millions don’t want to leave?
Why doesn’t Mexico have any sense of disturbance for the illegals here who send money there and then have to live here, not only on sometimes subminimum wage but with part of their wages sent home?
Why is the argument about “who would do the work here” vs “if there weren’t cheap laborers maybe the wages would go up and people would do the work here legally”?

Thank you Victor.