Trump’s executive order ending the separation of refugee families detained in the US may run afoul of the Flores settlement because Flores requires the federal government to do two things: to place children with a close relative or family friend “without unnecessary delay,” rather than keeping them in custody; and to keep immigrant children who are in custody in the “least restrictive conditions” possible. Here’s the text of Flores v. Meese – Stipulated Settlement Agreement Plus Extension of Settlement.
Here’s links to two recent CRS reports:
Unaccompanied Alien Children: An Overview (R43599, Jan. 18, 2017)
Unaccompanied Alien Children—Legal Issues: Answers to Frequently Asked Questions (R43623, Jan. 27, 2016)