The U.S.-Mexican border is in flux as economic, political and social changes reshape the relationship between the two countries.
The U.S. is building hundreds of miles of fence along the boundary and aggressively deporting more illegal immigrants than at any point in history. Yet, at the same time, trade across the border continues to grow.
On the Mexican side, a drug war — fueled by American demand for illicit narcotics and fought with American weapons — has killed thousands of people this year. The bodies turn up in piles. Some have been shot. Some are strangled. Some are
entepado — the heads wrapped in duct tape. Some have no heads at all.
Series Overview: Examining A Relationship In Flux : NPR