Mexican Military Incursions on US Soil Worry Border Agents

SAN DIEGO—As daylight begins to fade at an abandoned illegal immigrant camp at the border wall near Jacumba, in California’s San Diego County, a couple of Mexican soldiers armed with assault rifles patrol the rocky terrain in the hills above. Below them, white tents along the Mexican side of the border wall signal the army presence as Mexican national guard (Nacionale Guardia) troops pull up in a truck. They set up camp here in early February. On Feb. 29, a Mexican soldier hides behind a rock as he realizes reporters have seen him on the U.S. side of the border. Several moments later, he ducks back under the barbed wire fence into Mexico....