Yes --- it was interesting -- a while back I was watching a show broadcast from Juarez -- a panel discussion which included a priest from there. They were disussing the massive social problems Juarez is facing and many of those problems are due to massive migration --- people moving up from the south and from Central America to work in maquilas or start attempting a move in the USA --- they've completely overwhelmed the infrastructure --- the taxpayers can't begin to provide them decent living standards, the schools and hospitals are long past being overwhelmed. These people have migrated far from home, far from their families, neighborhoos, traditions. They're in upheaval, their is no family safety net, no neighborhood safety net.
The conclusion was that massive migration is instability and it leads to more instability and it is mostly due to social injustice in Mexico which makes it impossible for people to stay home.
This situation is totally FUBARed.