That would have happened but the recent immigration reform effort was scuttled in order to keep it as a campaign issue. Otherwise congress has no say so in requiring detention before immigration hearings, the Federal Courts have already ruled minor children cannot be held in dentention. Keeping kids in cages and/or separating families isn't what civilized societies practice. At least we don't yet.
As Hannah Arendt wrote in the early 60's of her concept termed the " banality of evil", she was referring to the argument that the SS Guards running the camps were otherwise just the kid next door. Eichmann was just a regular guy. If you pretend they were aberrations then you don't have to fear it could happen here. Her point was that if you demonize a group enough that you make them subhuman, taking the next step isn't that much of a leap. That begins with calling them rapists and murderers, " poisoning the blood of our nation", riff-raff, taking free stuff, living at taxpayer expense, taking our jobs,......