Masked gunmen barged onto a bus in northern Mexico, carrying a list of names. They left without firing a single shot, taking at least 19 passengers with them as they sped away from the scene. And so far, they seem to have vanished without a trace. Gunmen intercepted the bus March 7 along the highway that connects San Fernando, a town in the northern Mexican state of Tamaulipas, with the city of Reynosa, which sits across the US border from McAllen, Texas. Officials at first tried to downplay the possibility the migrants were kidnapped... Rafael Alonso Hernandez Lopez, who directs...