It's essentially a paperwork violation, not double homicide. You don't get to reap whatever misery you want on a person if they do something that violates a law. Either we have something resembling a just legal system or we have the barbarism you yearn for. This is plainly a serious human rights violation and in a more just world the people responsible for it would be tried at the Hague.
Moreover, this is happening to asylum seekers just the same. They aren't even breaking any law. Asylum seekers aren't "illegal immigrants." The goal is to reap such cruelty upon them that word gets out to stop trying to seek asylum.
If I didn't have my paperwork stating I had a right to be in Colombia, I was put in jail. One missionary was. Given what jail is like in South America, why isn't this considered a human rights violation?
I don't see why illegal immigrants are even permitted to be in American prisons. They should be met at the border wall with armed guards and never be allowed to cross in the first place.