And yet, as I write this, about 3000 teenagers from our besieged border are talking up residence about a half hour down the road, at the Kay Bailey Hutchison Convention Center in downtown Dallas. The border crisis is now a very local story for me, and your town may be next. In an arrangement hatched between the federal government and Dallas city officials, an enormous exhibit space at the convention center will be home to a massive population of teenage boys for a period we are told will not exceed 90 days. That’s about all we have been told. We...