I thought a lot of these kids were actually coming across by bus.
They were then being processed by the border patrol, put up in temporary housing and sent on via bus to various cities in the interior.
All I know is the federal government is aiding and abetting criminal activity. From my understanding, this new 'law' means once someone on our side takes responsibility for a (cough) 'minor', they become our responsibility.
That's the purpose of the feds taking (or forcing the states to take) these people into custody and then moving them to another location.