[On whether or not it should be fully legal for parent do deny their children medical care for faith based reasons ]

For the record faith healing is a little silly even for an old hpippie like me. However....

Unless your willing for the "government" to get involved and regulate guns so the 60+ children who die each year from gun related deaths are saved then no, you can't regulate to save children from what some states have decided is reasonable.

It comes down to how badly you want the freedoms you already have. If you want them you have to take the good with the bad and that includes allowing parents to decide what is best for their children even if they end up dying from it.