Central American migrants attempt to enter Mexico Mexican immigration officers check the ID of migrants crossing the border between Tecun Uman, Guatemala, and Ciudad Hidalgo, Mexico, at checkpoints in Chiapas. Mexican troops urged some 1,500 Central American migrants to maintain "order and respect" on Saturday after the group attempted to force entry into the country from Guatemala in the hopes of trekking onward to the United States. IMAGES AND SOUNDBITES