Hundreds of mainly Honduran migrants started walking and hitching rides Wednesday from the city of San Pedro Sula, in a bid to form the kind of migrant caravan that reached the U.S. border in 2018. Some migrants waved Honduran flags and shouted slogans against President Juan Orlando Hernández as they set out for the Guatemalan border. Some reached the Guatemalan border by early afternoon. Most attempts at forming caravans in 2019 were broken up by police and the national guard in Mexico, which has come under increased U.S. pressure to prevent migrants from arriving at the U.S. border. In his...