In this rebroadcast from Jan. 4, 2013, Louie talks with author Ken Hudnall. Hudnall talks about the Chinese immigrant workers who came to El Paso in the 1880s to work on the railroad system. Hundreds of Chinese immigrants remained in El Paso, creating El Paso's Chinatown. After a Chinese exclusion law was passed by Congress in 1882, many El Pasoans began to illegally smuggle Chinese into the city. Legends persist of a tunnel system hundreds of miles long and an underground city below Downtown El Paso which hid & protected many of these Chinese illegal immigrants. Hudnall talks about his quest to map this complex series of tunnels and his search for the underground city. http://kenhudnall.com Aired Nov. 29, 2013.