Caravan of hundreds of migrants press north across Mexico

Migrants join a caravan heading to Mexico City, in Huixtla, Mexico October 27, 2021. REUTERS/Daniel Becerril

A migrant covered with a U.S. flag gestures as he takes part in a caravan heading to Mexico City, in Escuintla, Mexico October 29, 2021. REUTERS/Daniel Becerril

A Honduran migrant carries a boy on his shoulders, as they take part in a caravan heading to Mexico City, in Acacoyagua, Mexico October 29, 2021. REUTERS/Daniel Becerril

Migrants take part in a caravan heading to Mexico City, in Villa Comaltitlan, Mexico October 27, 2021. REUTERS/Daniel Becerril

A migrant boy plays with a ballon during a caravan heading to Mexico City, in Villa Comaltitlan, Mexico October 27, 2021. REUTERS/Daniel Becerril

Alison, 4, a Honduran migrant girl sick with a fever holds a lollipop while her dad carries her, as they take part in a caravan heading to Mexico City, in Villa Comaltitlan, Mexico October 27, 2021. REUTERS/Daniel Becerril

Honduran migrants Julio Cesar Gonzalez, 30, and his wife Edith Cantillano, 22, take a rest with their children sick with fever, as they take part in a caravan heading to Mexico City, in Villa Comaltitlan, Mexico October 27, 2021. REUTERS/Daniel...more

Migrants rest in a sports court as they take part in a caravan heading to Mexico City, in Villa Comaltitlan, Mexico October 27, 2021. REUTERS/Daniel Becerril

Honduran migrants Julio Cesar Gonzalez, 30, and his wife Edith Cantillano, 22 walk with their children sick with fever on their shoulders retaking their journey heading to Mexico City, in Huixtla, Mexico October 27, 2021. REUTERS/Daniel Becerril

A migrant woman is given water as she and other migrants take part in a caravan heading to Mexico City, in Lazaro Cardenas, Mexico October 27, 2021. REUTERS/Daniel Becerril

A migrant rests after receiving medical help as she and other migrants from Haiti, South America and Central America in an area in Huixtla before they continue with a caravan, heading to Mexico City to apply for asylum and refugee status, in Huixtla,...more

Migrants taking part in a caravan heading to Mexico City, rest in Villa Comaltitlan, Mexico October 27, 2021. REUTERS/Daniel Becerril

A migrant child pushes a stroller on a road while taking part in a caravan heading to Mexico City, in Lazaro Cardenas, Mexico October 27, 2021. REUTERS/Daniel Becerril

Migrants walk on a road while taking part in a caravan heading to Mexico City, in Lazaro Cardenas, Mexico October 27, 2021. REUTERS/Daniel Becerril

Migrants join a caravan heading to Mexico City, in Huixtla, Mexico October 27, 2021. REUTERS/Daniel Becerril

An injured migrant is helped as he and other migrants take part in a caravan heading to Mexico City, in Huixtla, Mexico October 27, 2021. REUTERS/Daniel Becerril

Honduran migrants Julio Cesar Gonzalez and his wife Edith Cantillano give medicine for fever to their son Cesar, 2, as they take part in a caravan heading to Mexico City, in Villa Comaltitlan, Mexico October 27, 2021. REUTERS/Daniel Becerril

A migrant receives medical help, as migrants from Haiti, South America and Central America rest in an area in Huixtla before they continue with a caravan, heading to Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26,...more

A woman gives her daughter water as migrants from Haiti, South America and Central America rest in an area in Huixtla before they continue with a caravan, heading to Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26,...more

Men walk as migrants put clothes to dry before continuing their journey walking in a caravan of migrants from Central America and Haiti heading to Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel...more

Migrants rest before continuing their journey walking in a caravan of migrants from Central America and Haiti heading to Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel Becerril

A woman walks with a child as migrants from Central America and Haiti join a caravan heading to Mexico City, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel Becerril

Migrants rest before continuing their journey walking in a caravan of migrants from Central America and Haiti heading to Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel Becerril

Migrants rest before continuing their journey walking in a caravan of migrants from Central America and Haiti heading to Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel Becerril

Migrants put clothes to dry before continuing their journey walking in a caravan of migrants from Central America and Haiti heading to Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel Becerril

A migrant shaves while he bathes in a river before continuing the journey walking in a caravan of migrants from Central America and Haiti heading Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel...more

Migrants wash clothes in a river before continuing their journey walking in a caravan of migrants from Central America and Haiti heading Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel Becerril

Migrants wash clothes in a river before continuing their journey walking in a caravan of migrants from Central America and Haiti heading Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel Becerril

Migrants wash clothes in a river before continuing their journey walking in a caravan of migrants from Central America and Haiti heading Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel Becerril

A migrant bathes in a river before continuing the journey walking in a caravan of migrants from Central America and Haiti heading Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel Becerril

Migrants, from Haiti, South America and Central America rest in Huixtla before continuing in a caravan headed for Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Jacob Garcia

Migrants, from Haiti, South America and Central America rest in Huixtla before continuing in a caravan headed for Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Jacob Garcia

Migrants, from Haiti, South America and Central America rest in Huixtla before continuing in a caravan headed for Mexico City to apply for asylum and refugee status, in Huixtla, Mexico October 26, 2021. REUTERS/Jacob Garcia

Migrants rest as they join a caravan heading to Mexico City, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel Becerril

Migrants rest as they join a caravan heading to Mexico City, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel Becerril

Migrants rest as they join a caravan heading to Mexico City, in Huixtla, Mexico October 26, 2021. REUTERS/Daniel Becerril

Migrants from Central America and Haiti walk on a road in a caravan heading to Mexico City to apply for asylum and refugee status, in Huehuetan, Mexico October 25, 2021. REUTERS/Jacob Garcia

A migrant carries his son as other migrants from Central America and Haiti walk on a highway in a caravan heading to Mexico City to apply for asylum and refugee status, in Huehuetan, Mexico October 25, 2021. REUTERS/Jacob Garcia

Migrants from Central America and Haiti walk on a highway in a caravan heading to Mexico City?to apply for asylum and refugee status, in Huehuetan, Mexico October 25, 2021. REUTERS/Jacob Garcia

Migrants from Central America and Haiti walk on a highway in a caravan heading to Mexico City to apply for asylum and refugee status, in Huehuetan, Mexico October 25, 2021. REUTERS/Jacob Garcia