Incidentally, in every state of the union, there are currently programs in place to watch over, and if necessary, remove children from homes of unfit parents. Whether the parents are mentally ill, strung out on drugs or booze, neglectful, etc., every state has at least one state agency charged with the oversight of care. If the children are removed from the home, the parents have certain rights, and the entire thing (as far as any state I've ever heard of) is overseen by the courts.
It's not a perfect system, nor do I believe you can construct one. However, I have seen cases where parents are able to overcome deficits and regain their own children to their custody. Then again, some parents have no business having kids in the first place, and the kids are better off in foster care. My office handles these kinds of cases, so I know a little something about them.
The kind of provision you are citing seems to simply dovetail into that patchwork of various state programs that do the same thing.
Wait, what I meant to say is, Obama eats babies, and he's coming after yours next. Whew. Almost lost my damned head there for a minute. Oh, and say goodbye to gramma and grampa. Their executions are scheduled for the first month after passage of the bill.