Do Good Fences Make Good Neighbors? A History of Border Walls
U.S. Border Patrol agent Sal De Leon stands near a section of the U.S.- Mexico border fence while stopping on patrol on April 10, 2013 in La Joya, Texas.
( John Moore / Getty )
( John Moore / Getty )
Produced by Jillian Weinberger
Hosted by Todd Zwillich
