Pretty much every mother who has not been alleged to have committed a crime, for whom there is no specific allegation of wrongdoing, and for whom the child shows no sign of abuse.
In fact, absent a credible threat of actual harm to the infant, the state law would dictate that mother and child be kept together.
Heck, even if you are into taking away people's rights in order to get the children separated to get dirt on the parents, there's no point in doing that with infants, who can't actually talk.
Also can you link me to where a child that was taken out of a home got to take his mother with him? I’m not saying I don’t believe you. I just have not heard of this before.