I am not condoning the actions of ICE in respect to the father in any way, however the correct course of action was taken in respect of taking the child into care.
Presumably the family didn't know where the child was because they didn't know where the father was.
Do you really expect 5 year old to know the phone numbers of their family?
there's plenty to beat ICE up over, but I really don't think the initial situation in respect of this child is one of them, as clearly the alternative was to leave the child on the street.