Hmm? Just one citation?
There's 4 dealing specifically with the latter part, with some overlap into the former. And there's lots more available on even a quick search.
Literally, in some cases, parents were told that kids were being taken to the bathroom and the kids were just taken away. There's stories that tell of babies being pretty much ripped out of a mother's arms while the baby was breast-feeding, no less. Looks like there's lawsuits already happening because the HHS is unable or unwilling to connect the taken kids with their parents. Either way, more details can be found in the articles about that. With that said, they can potentially be reunited. It's just that there's very remarkable hurdles in play, in a number of ways... I dare say that some of those hurdles are seemingly intentional, for that matter, especially when we've got cases where the people who separated the parents and children outright told the parents that they'll never see the kids again and the part where this was originally proposed as a way to deter further asylum seekers.