Jose Luis Gonzalez/ReutersA man standing on the Mexican side of the Rio Grande was injured on Saturday night when a Texas National Guard soldier opened fire across the water, Mexico’s top diplomat said. The unidentified man was on the riverbanks of Ciudad Juárez when the troop in El Paso fired, according to Roberto Velasco, the chief of the North America bureau at the Mexican Foreign Ministry. Velasco said the Mexican government has asked the Texas Department of Public Safety to investigate the