Moises Castillo/AP
  • Honduran migrants help each other cross over the U.S. border wall to San Diego, California, from Playas in Tijuana, Mexico, Dec. 12, 2018.
    Moises Castillo/AP
  • Migrants, part of a caravan of thousands from Central America, try to reach the United States, in Tijuana, Mexico, Dec. 8, 2018.
    Mohammed Salem/Reuters
  • Central American migrants endure torrential rains at the Barretal shelter in Tijuana, Mexico, Dec. 5, 2018.
    Carol Guzy/ZUMA Press
  • Central American Migrants from a caravan climb the Tijuana-San Diego wall in Tijuana, Mexico, Dec. 3, 2018.
    Carol Guzy/ZUMA Press
  • Central American Migrants attempt to cross into the United States from Mexico, Dec. 3, 2018.
    Carol Guzy/ZUMA Press
  • Aerial view of a temporary shelter where Central American migrants, mostly from Honduras, are staying in Tijuana, Mexico, Nov. 27, 2018. After a trek of more than a month from Honduras, nearly 5,000 migrants, including women and children, are now in Tijuana living in a makeshift shelter.
    Guillermo Arias/AFP/Getty Images
  • Maria Meza, center, part of a caravan of thousands from Central America trying to reach the United States, runs away from tear gas with her five-year-old twin daughters Saira Mejia Meza, left, and Cheili Mejia Meza in front of the border wall between the U.S. and Mexico, in Tijuana, Nov. 25, 2018.
    Kim Kyung-Hoon/Reuters
  • Migrants and members of the media run from tear gas released by U.S border patrol near the fence between Mexico and the United States in Tijuana, Mexico, Nov. 25, 2018.
    Hannah McKay/Reuters
  • A group of Central American migrants climb the border fence between Mexico and the United States, near El Chaparral border crossing, in Tijuana, Mexico, Nov. 25, 2018.
    Pedro Pardo/AFP/Getty Images
  • A pregnant migrant, part of a caravan from El Salvador travelling to the U.S., faints during an operation of the Mexican police to detain them for entering the country illegally, in Metapa, Mexico, Nov. 21, 2018.
    Alkis Konstantinidis/Reuters
  • People look through the border fence, Nov. 16, 2018, in Tijuana, Mexico. U.S. border agencies continued to fortify the fence with razor wire and additional personnel as members of the migrant caravan arrived in Tijuana.
    John Moore/Getty Images
  • Migrants taking part in a caravan heading to the US, line up to enter a shelter as arriving to Puebla, Puebla state, Mexico, Nov. 3, 2018.
    Guillermo Arias/AFP/Getty Images
  • Migrants, part of a caravan traveling en route to the United States, clean themselves in front of the border wall with the United States, in Tijuana, Mexico Nov. 17, 2018.
    Carlos Garcia Rawlins/Reuters
  • Members of the migrant caravan continue their journey to the United States through Ciudad Isla, state of Veracruz, Mexico, Nov. 3, 2018.
    Angel Hernandez/EPA/Rex/Shutterstock
  • Central American migrants, part of the caravan hoping to reach the U.S. border, travel during the night on a truck in Orizaba, Veracruz state, Mexico, Nov. 3, 2018.
    Rodrigo Abd/AP
  • Members of the Central American migrant caravan move towards their destination of the United States border, Nov. 03, 2018, in Sayula de Aleman, Mexico. President Donald Trump said Wednesday, Oct. 31, 2018, as many as 15,000 troops may be deployed to the U.S.-Mexico border in an effort to prevent members of the migrant caravan from illegally entering the country.
    Spencer Platt/Getty Images
  • Members of the Central American migrant caravan move towards their destination of the United States border, Nov. 03, 2018, in Sayula de Aleman, Mexico.
    Spencer Platt/Getty Images
  • Migrants, part of a caravan traveling to the U.S., rest in a gym after arriving in Mapastepec, Mexico, Nov. 2, 2018.
    Leah Millis/Reuters
  • Rosendo Noviega from Guatemala holds his daughter Belinda Izabel as he walks along the highway to Juchitan from Santiago Niltepec, Mexico, Oct. 30, 2018.
    Ueslei Marcelino/Reuters
  • A woman holding her baby hitches a ride on the fender of a tanker in Niltepec, Mexico, Tuesday, Oct. 30, 2018.
    Rebecca Blackwell/AP
  • Migrants traveling with a caravan of thousands from Central America en route to the United States ride on a truck along the highway to Juchitan from Santiago Niltipec, Mexico, Oct. 29, 2018.
    Hannah McKay/Reuters
  • A new group of Central American migrants bound for the U.S border wade en masse across the Suchiate River, that connects Guatemala and Mexico, in Tecun Uman, Guatemala, Oct. 29, 2018.
    Santiago Billy/AP
  • Police officers line up as a temporary blockade against a caravan of migrants from Central America, en route to the United States, making its way to San Pedro Tapanatepec from Arriaga, Mexico, Oct. 27, 2018.
    Ueslei Marcelino/Reuters
  • An aerial view of Honduran migrants heading in a caravan to the U.S. in southern Mexico, Oct. 27, 2018.
    Guillermo Arias/AFP/Getty Images
  • Migrant Maria Ramos, 17, feeds her daughter Milagros Esther, 1, in Tapanatepec, Mexico, Oct. 27, 2018.
    Rodrigo Abd/AP
  • A man from Honduras carries his daughter Allison, 4, as he walks amid a caravan of thousands of migrants from Central America en route to the United States in the outskirts of Arriaga, Mexico, Oct. 27, 2018.
    Adrees Latif/Reuters
  • Honduran migrants, taking part in a caravan heading to the US, rest during a stop in Mapastepec, Chiapas state, Mexico, Oct. 24, 2018.
    Pedro Pardo/AFP/Getty Images
  • Honduran migrants taking part in a US-bound caravan travel from Mapastepec to Pijijiapan Chiapas state, Mexico, Oct. 25, 2018.
    Pedro Pardo/AFP/Getty Images
  • Aerial view of Honduran migrants taking part in a caravan heading to the US, walking and travelling aboard a truck near Mapastepec, southern Mexico, Oct. 25, 2018.
    Guillermo Arias/AFP/Getty Images
  • Aerial view of Honduran migrants on board a truck as they take part in a caravan heading to the US, in the outskirts of Tapachula, on their way to Huixtla, Chiapas state, Mexico on Oct. 22, 2018.
    Pedro Pardo/AFP/Getty Images
  • Honduran migrants cross the Suchiate River, which separates Guatemala from Mexico, as others look from the bridge, Oct. 20, 2018.
    Esteban Biba/EPA-EFE/REX/Shutterstock
  • Central American migrants making their way to the U.S pass through Ciudad Hidalgo, Mexico, Oct. 21, 2018. Despite Mexican efforts to stop them at the border, about 5,000 Central American migrants resumed their advance toward the U.S. border.
    Moises Castillo/AP
  • Honduran migrants take part in a caravan heading to the U.S., on the road linking Ciudad Hidalgo and Tapachula, Chiapas state, Mexico, Oct. 21, 2018.
    Pedro Pardo/AFP/Getty Images
  • Honduran migrants sit on a police bus as they wait to return voluntarily to their country in Tecun Uman, Guatemala, Oct. 21, 2018. The migrants on the bus, who were traveling by foot with a large caravan, said they were taking advantage of the government's offer to bus them to the Honduran border because they were too tired to keep going. Those who needed emergency care were to be flown back, according to authorities.
    Oliver de Ros/AP
  • Honduran migrants taking part in a caravan to the U.S., on Mexican soil after crossing the Suchiate River, Oct. 20, 2018.
    Orlando Sierra/AFP/Getty Images
  • Migrants from Honduras are sitting in a caravan on a truck in the direction of the Mexican border, Oct. 18, 2018, in Guatemala City.
    Morena Perez Joachin/dpa Photo via Newscom
  • Honduran migrants taking part in a caravan to the U.S. wait to cross to Mexico, in Ciudad Tecun Uman, Guatemala, on Oct. 20, 2018.
    Orlando Sierra/AFP/Getty Images
  • Thousands of Honduran migrants rush across the border towards Mexico, in Tecun Uman, Guatemala, Oct. 19, 2018. Migrants broke down the gates at the border crossing and began streaming toward a bridge into Mexico. After arriving at the tall, yellow metal fence some clambered atop it and on U.S.-donated military jeeps. Young men began violently tugging on the barrier and finally succeeded in tearing it down.
    Oliver de Roos/AP
  • A Honduran migrant protects his child after fellow migrants, part of a caravan trying to reach the U.S., stormed a border checkpoint in Guatemala, in Ciudad Hidalgo, Mexico on Oct. 19, 2018.
    Ueslei Marcelino/Reuters
  • Guatemalan police stand guard as they prevent Honduran migrants from heading towards the Guatemala-Mexico international border bridge in Ciudad Tecun Uman, Guatemala, on Oct. 19, 2018.
    Johan Ordonez/AFP/Getty Images
  • Guatemalan Red Cross medics treat a woman who collapsed from heat exhaustion while walking with more than 1,500 people in a migrant caravan on Oct. 16, 2018, near Quezaltepeque, Guatemala. orth through Guatemala and Mexico in route to the United States.
    John Moore/Getty Images
  • Honduran police officers stand guard as Honduran migrants look on near of Agua Caliente, hoping to cross into Guatemala and join a caravan trying to the US, in Honduras on Oct. 17, 2018.
    Jorge Cabrera/Reuters
  • Honduran migrants, some of the more than 1,500 people traveling in a caravan, move north on Oct. 16, 2018 near Quezaltepeque, Guatemala. A caravan of Central Americans, the second of its kind in 2018, began in San Pedro Sula, Honduras with plans to march north through Guatemala and Mexico in route to the United States.
    John Moore/Getty Images
  • A caravan of more than 1,500 Honduran migrants moves north after crossing the border from Honduras into Guatemala on Oct. 15, 2018 in Esquipulas, Guatemala. The caravan, the second of 2018, began Friday in San Pedro Sula, Honduras with plans to march north through Guatemala and Mexico en route to the United States. Honduras has some of the highest crime and poverty rates in Latin America.
    John Moore/Getty Images
  • Honduran migrants leave Guatemala City at sunrise, Oct. 18, 2018 as they make continue their way north toward the U.S. Many of the more than 2,000 Hondurans in a migrant caravan trying to wend its way to the United States left spontaneously with little more than the clothes on their backs and what they could quickly throw into backpacks.
    Moises Castillo/AP
  • Honduran migrants headed for the United States rest at the El Amatillo frontier in Pasaquina, El Salvador, Oct. 18, 2018. Thousands of Honduran migrants are marching north in a bold attempt to reach the United States, defying threats from President Donald Trump to stop aid to countries that let them pass.
    Marvin Recinos/AFP/Getty Images
  • Hundreds of Honduran migrants stand at the shore of the Suchiate River on the border between Guatemala and Mexico, Oct. 18, 2018. Mexico's foreign ministry says government officials at its southern border with Guatemala have started assisting the early arrivals from a caravan of some 3,000 Honduran migrants that has drawn sharp criticism from President Donald Trump.
    AP
  • Honduran migrants climb an overpass to go to Tecum Uman, Guatemalan border with Mexico, in Guatemala City, on Oct. 18, 2018.
    Orlando Sierra/AFP/Getty Images
  • A group of Honduran migrants on the border of Honduras with El Salvador continue their journey to the US at El Amatillo, eastern Honduras, Oct. 18, 2018.
    Rodrigo Sura/EPA/Rex/Shutterstock
  • Honduran migrants heading for the U.S. rest next to a line of riot police in El Salvador, at the border with Honduras, Oct. 18, 2018.
    Marvin Recinos/AFP/Getty Images