En fotos: Así avanza la caravana de migrantes que desafía a Trump

Honduran migrants heading in a caravan to the United States, leave Guatemala City, on October 18, 2018. - US President Donald Trump threatened Thursday to send the military to close its southern border if Mexico fails to stem the "onslaught" of migrants from Central America, in a series of tweets that blamed Democrats ahead of the midterm elections. (Photo by Johan ORDONEZ / AFP)

Honduran migrants take part in a caravan heading to the US on the road linking Ciudad Hidalgo and Tapachula, Chiapas state, Mexico on October 21, 2018. - Thousands of Honduran migrants resumed their march toward the United States on Sunday from the southern Mexican city of Ciudad Hidalgo, AFP journalists at the scene said. (Photo by Pedro Pardo / AFP)

Honduran migrants take part in a caravan heading to the US on the road linking Ciudad Hidalgo and Tapachula, Chiapas state, Mexico, on October 21, 2018. - Thousands of Honduran migrants resumed their march toward the United States on Sunday from the southern Mexican city of Ciudad Hidalgo, AFP journalists at the scene said. (Photo by Pedro Pardo / AFP)

Honduran migrants take part in a caravan heading to the US, on the road linking Ciudad Hidalgo and Tapachula, Chiapas state, Mexico, on October 21, 2018. - Thousands of Honduran migrants resumed their march toward the United States on Sunday from the southern Mexican city of Ciudad Hidalgo, AFP journalists at the scene said. (Photo by Pedro Pardo / AFP)

A Mexican Federal Police helicopter overflies Honduran migrants heading in a caravan to the US, on the road linking Ciudad Hidalgo and Tapachula, Chiapas state, Mexico, on October 21, 2018. - Thousands of Honduran migrants resumed their march toward the United States on Sunday from the southern Mexican city of Ciudad Hidalgo, AFP journalists at the scene said. (Photo by Johan ORDONEZ / AFP)

Aerial view of Honduran migrants heading in a caravan to the US, on the road linking Ciudad Hidalgo and Tapachula, Chiapas state, Mexico, on October 21, 2018. - Thousands of Honduran migrants resumed their march toward the United States on Sunday from the southern Mexican city of Ciudad Hidalgo, AFP journalists at the scene said. (Photo by PEDRO PARDO / AFP)

Honduran migrants heading in a caravan to the US, rest alongside the route, in Metapa, Chiapas state, Mexico on October 22, 2018. - President Donald Trump on Monday called the migrant caravan heading toward the US-Mexico border a national emergency, saying he has alerted the US border patrol and military. (Photo by Pedro Pardo / AFP)

Honduran migrants take part in a new caravan heading to the US with Honduran and Guatemalan national flags in Quezaltepeque, Chiquimula, Guatemala on October 22, 2018. - US President Donald Trump on Monday called the migrant caravan heading toward the US-Mexico border a national emergency, saying he has alerted the US border patrol and military. (Photo by ORLANDO ESTRADA / AFP)

Honduran migrants headed for the US rest at the El Amatillo frontier in Pasaquina, 241 km from San Salvador, on October 18, 2018. - Thousands of Honduran migrants are marching north in a bold attempt to reach the United States, defying threats from US President Donald Trump to stop aid to countries that let them pass. (Photo by Marvin RECINOS / AFP)