If I understand it correctly, nothing much has changed except children and their parents may not be separated. It still doesn’t mean that all parents who claim a child is theirs can keep the child with them if they can’t prove the child is indeed theirs. Normally, any adult with a child who enters the US illegally and is arrested will have the child taken away. Supposedly it is also true if a US citizen is arrested and has a child. So, nothing much has changed, as I understand it. It’s complex and I’m still trying to understand it all.