A local government health official recently stated that, not only are migrants and drugs crossing the border into his country, but diseases also.
Big surprise? No. But this was a Mexican health official in Chiapas, talking about migrants, drugs and disease entering Mexico from Guatemala. It was reported in the Mexican media in an article entitled "Enfermedades y epidemias amenazan la region" (Diseases and Epidemics Threaten the Region).
The INM (Mexican immigration bureaucracy, which exercises jurisdiction over yours truly) reports that in 2006, half a million migrants passed through the area, and 40% of them (182,705) failed to make it to the U.S.A.