A hazardous insect from Latin America known as the triatomine bug, or "kissing bug," has found its way to more than half the United States, serving as a reminder that a porous border lets in more than just human beings. "We have a border security problem, no question about that, and part of the border security problem is a significant health problem," said Dr. Lee Hieb, an orthopedic surgeon and past president of the Association of American Physicians and Surgeons. The kissing bug has been known to carry a parasite that causes Chagas disease, which can be fatal if left...