A caravan of unarmed, destitute people, many of them women and children, is snaking its way through Mexico toward the United States at the breakneck pace of about three miles per hour. Still 1,000 miles from America, the ill-nourished pedestrians travel as a pack for protection against gangs; the few who make it to the border, perhaps next month, will likely apply, legally, for asylum.
"Mexico's Police and Military are unable to stop the Caravan," President Trump tweets. Without evidence, he adds: "Criminals and unknown Middle Easterners are mixed in. I have alerted Border Patrol and Military that this is a National Emergy.