But even with the recent arrest of its leader, Joaquin El Chapo Guzman, this almost century-old drug route is unlikely to change much.In this episode, ???Reveal??? host Al Letson travels to El Paso, Texas, to meet up with G.W. Schulz, CIR???s border and national security reporter, to get a bird???s-eye view of what happens as drugs and other goods pass over one of the world's busiest border cros