On June 13, the first bus of illegal immigrant minors, aged 12-17, arrived at Fort Sill, Oklahoma. The state of Oklahoma was given no formal notice, and no chance to object. After weeks of bad publicity, public outrage and political pressure, the Obama administration announced this week that the facility will close by Friday, Aug. 8. That’s good news for the people of Oklahoma and the men and women of Fort Sill, who will once again have the full use of their military base for the purpose it was designed for: housing and training soldiers. What the facility’s closure does...