Putting on its Victorian gentleman suit (pace Tom Wolfe), the Washington Post's editorial board tut-tuts a rich part of Washington, D.C. and its political patrons, for pulling out all stops to prevent construction of a child-migrant shelter in its fancy environs. MANY AMERICANS are rightly outraged by the Trump administration’s treatment of migrant children, who have been separated from parents and ill-treated by authorities. Democrats have been understandably eager to distance themselves from such policies — a stance that can result in knee-jerk opposition even to sensible practices in effect during the Obama administration. That might explain the nearly uniform outcry from Washington-area politicians incensed...