Albino Vargas-Hernandez, a 48-year-old illegal alien from Mexico, and Rene Camacho, a 47-year-old U.S. citizen residing in Houston, both pleaded guilty Dec. 12 to conspiracy to transport and harbor illegal aliens. A third man who is also illegally present in the U.S., 21-year-old Mexican national Hiram Lamarca-Gonzalez, entered his guilty plea Dec. 4.