Trump's Department of Homeland Security does not know the definition of a cage. Former Secretary of DHS, Kirstjen "Krispy Kidders" Nielsen, thinks there is a difference between a chain-link pen and a cage. But if she spent some time inside either one, she would realize that what is meant for housing animals should not be used for innocent children. Maybe she considers some children to be of less worth, like those "brown barbarians invading the southern border".
What is barbaric is to enforce a Family Separation Policy.