TOPSHOT - Migrants from poor Central American countries -mostly Hondurans- moving towards the United States in hopes of a better life, board a truck at a service station in Ixtlan del Rio, State of Nayarit to board transportation to take them to Escuinapa (State of Sinaloa) on their trek north, on November 13, 2018. Defense Secretary Jim Mattis said Tuesday he will visit the US-Mexico border, where thousands of active-duty soldiers have been deployed to help border police prepare for the arrival of a "caravan" of migrants. - US Defence Secretary Jim Mattis said Tuesday he will visit the US-Mexico border, where thousands of active-duty soldiers have been deployed to help border police prepare for the arrival of a "caravan" of migrants. (Photo by ALFREDO ESTRELLA / AFP)