The Border Wall Business is Booming Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email 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 ) Produced by Oliver Lazarus Produced by PRI and WNYC