Just hours before President Donald Trump was sworn into office on Monday, a migrant caravan of more than 2,000 people set off from deep in southern Mexico with the aim of crossing into the U.S. The caravan, consisting of men, women, and children from various countries, was seen marching through the southern Mexican city of Tapachula near the Guatemalan border in darkness early Monday. The migrants were carrying bags and rucksacks while migrant parents could be seen pushing children in strollers or carrying youngsters on their shoulders. It's at least the tenth-largest caravan to walk out of Tapachula since the...