“President Trump has signed an executive order to halt the family separation process he created, but at least 2,500 children have already been taken from their parents and sent to shelters in at least 15 states. Some are as young as a few months old. Hundreds have been apart from distraught parents for several weeks. The system for reuniting these children with parents arrested for crossing the border illegally is chaotic, so the humanitarian crisis could persist for months.”