A Central American migrant takes a nap in the shade under a freight train car, during his journey toward the US-Mexico border, in Ixtepec, Oaxaca State, Mexico, Tuesday, April 23, 2019. Whereas in late 2018 and early 2019 Mexican authorities were handing out humanitarian visas and processing asylum requests, they have now largely stopped doing so, instead making migrants wait weeks in the southern town of Mapastepec for visas that never come. (AP Photo/Moises Castillo)
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