This week the U.S. State Department issued a Level 4 “Do Not Travel” advisory for the Mexican state of Tamaulipas, which borders McAllen, Texas, due to ongoing violence, including gun battles, kidnappings, and the use of improvised explosive devices (IEDs).Additionally, the state of Chihuahua—home to Ciudad Juárez, located about 300 miles from Midland, and the border town of Ojina...