To play devil's advocate for a moment:
That is something that their parents should have thought of before knowingly breaking the law and it was their responsibility to consider this as a possibility before doing so. It's not our fault or our responsibility to ensure that a criminal's child gets any measure of care. Imagine if we said that a criminal's children would have access to free housing, free meals, and better medical care than the criminal could provide. People would be knocking over banks left and right. As it is, every taxpayer is subsidizing the housing and detention of these children who have no legitimate means towards a path of working and paying into the tax and welfare system. Very likely, they would work using stolen identities.
I've come to respect you in a sense, so I sincerely hope you do not believe that. And I sincerely hope that virtually no one else does either. Because jesus fucking christ that was difficult to read. So I suppose that anyone who held that opinion can sincerely fuck right off. It's just so outside of any level of empathy or understanding.
It's called "devil's advocate" for a reason. The devil is supposed to be a very persuasive being if you only listen and the logic in there is supposed to be quite binding. The core of it being that "if we provide incentives for breaking the law, people will break the law." to be blunt, if an immigrant crosses the border illegally but we provide to keep their children, the children will get better healthcare, medical assistance, food assistance, and higher quality education for free and they see that as an incentive to cross the border illegally and indeed we see surges in illegal border crossings every time there's speak of amnesty or DACA/DREAMER type programs.
As a human and a person, I do not agree with it. As a person who believes that you do not get to pick and choose the laws you want to follow, I acknowledge the truth in it. I would be utterly foolish not to. You should follow the laws that exist until such a time as you can change them. Otherwise it is akin to anarchy. Anarchy is not a government but merely a transition state to another form or replacement government. By not following your laws or at least the framework for change in the government and laws, you are essentially saying that you want to replace the current government and the word for that is "sedition." As an example, a filibuster is fine and even allowed, having a sit-in in Congress chambers because the vote didn't go your way is not (cough cough, democrats).
Even I can feel the slant on this one. But regardless of party. This is fucked up. These children are going through this through no fault of their own. This experience will effect them for the rest of their life.