We see the same occurrence all over the world. That Mexican worker may someday have his job 'offshored' to Guatemala or Ethiopia. Manufacturing offers little long-term promise in a world that is shrinking technologically. Consider the service economy. It is much more difficult to ship the service economy offshore.
Most service industries have to be physically located near their customers.
Add the language and cultural implications it is almost impossible for foreign service businesses to compete. Therefore the labor and cash flows tend to remain local. And this is the key. To truly create wealth a country has to provide opportunity for all its citizens. Manufacturing cannot do that.