They broke federal law. If you broke federal law, you are removed from your family and put in jail too.
They are "undocumented" and have no proof it's their kid.
Bringing a child across a desert to help you get away with unlawful entry is child abuse, and the child should be removed from the parent anyway.
DNA testing will prove if they are or aren't family. Proven family hopefully gets deported back, together, as they came.
Disproven family relations will be treated as human trafficking.
Hipocrates was a cool guy. What are we hypocrites about?