The California National Guard on Wednesday trumpeted efforts to help curb illegal immigration on the Mexican border as its troops neared the end of training. Dozens of reporters and photographers watched bulldozers smooth a patch of dirt in a rugged area to make room for trucks, concrete and other materials to be used for building fences and improving roads and drainage controls. At a perch known as "Arnie's Point," troops demonstrated a Border Patrol infrared camera that Guardsmen will use to spot illegal border crossers up to five miles away. About 900 volunteer Guard troops have reported for duty along...