'We’ve never seen anything like this': As Trump threatens to close border, migrants overwhelm Texas cities

Under a bridge connecting the U.S. with Mexico, dozens of migrant families cram into a makeshift camp set up by U.S. Customs and Border Protection. The families are there because permanent processing facilities have run out of room.
Seven hundred miles east, busload after busload of weary, bedraggled migrants crowd into the Catholic Charities Humanitarian Respite Center in McAllen, Texas. Organizers there are used to handling 200 to 300 migrants a day. Lately, the migrants have been arriving at a clip of around 800 a day, overflowing the respite...