Portions of an illegal border tunnel discovered on Jan. 9 between El Paso and Juarez, Mexico, remain unfilled due to engineering challenges posed by the Rio Grande.

Employees of the Mexican Section of the International Boundary and Water Commission, or CILA in Spanish, map portions of the Rio Grande levee above an illegal smuggling tunnel between Juarez, Mexico, ...

We’ve created several data-driven stories and databases on topics including weather and climate, politics, education, sports and growth in Texas ... Scroll down for a map of where each homicide ...