The poorest being the families that work the factories along the border just inside mexico. Their pay is 7.00 a DAY. Most of those factories make goods for selling to Americans.
I think the mexican border is a huge money maker for for profit contractors to grab a lot of our Federal funds and stuff that money into their pockets. Even the prisons that hold the mexicans they can grab while they wait to be deported are private for profit prisons.
There is a dragnet and road blocks in the USA about 50 miles from the border. That's where even if some undocumented person is trying to 'self deport' and go home, they get caught and placed in prison.
One can fly to Canada from mexico, Cuba to and from mexico and canada. Even undocumented people from Russia can boat over to our west coast and canada, with ease.
The border Indian reservations do not want our Federal or private contracter border police on their land. They are their own Nation. That is a huge part of the mexico-usa border that is not included in the republican private profits pogrom.
Republicans have held the Dream act hostage for years now. President Obama said he would sign the dream act.
Republicans don't care about immigrants at all unless they can make private personal profits off them, and grab billions of our Federal and State taxpayer money.