We all know how often bureaucracy fails to work. Bureaucracy at the border is thousand times worse.
Presumably, the separated children were not tattooed with a case number (although the whiff of fascism is in the air, we have yet to cross this line). Perhaps they were given a piece of paper with their number. Did you ever give a piece of paper to a kid? Particularly one that has been transported, literally, across the country? Hardly the stuff of permanency.
And what about the parents? Did they have ID? Do we know their real names? Are they in jail? In hiding? Deported? Who knows????
What could possibly go wrong?
The real nightmare is about to begin.