NYT :
If the major characters in the migration drama unfolding in Chiapas could be captured in a collage, it would include a burly, white-haired farmer named Eusebio Ortega Contreras, who did not hide that most of the workers who picked mangos in his fields for $6 a day were underage, undocumented Guatemalans. Indians from Chiapas used to do these jobs, Mr. Ortega said. But in the past five years, they have been migrating to the United States. And lately, he said, he has begun to worry that he is going to lose the Guatemalans, too.