A 13-year-old Oklahoma girl visiting Mexico with her family has been killed in yet another cartel ambush on a long and lonely stretch of highway just south of Falcon Heights, Texas. After nine U.S. citizens were killed in the Mexican border state of Sonora in November, President Donald Trump threatened to label cartels terrorist organizations. When it came to it, however, he holstered the executive pen and backpedaled out of the saloon at the request of Mexican President Andres Manuel Lopez Obrador, who desires to embrace the cartels with “abrazos no balazos”—hugs not bullets.Now comes word that a 13-year-old Oklahoma...