"Most states in the U.S. have baby safe haven laws, allowing people to turn over their babies unharmed to a local receiving organization without the threat of prosecution. Normally, the receiving agency is a hospital emergency room, responsible adult, manned fire department, or police station. You must arrive with the baby unharmed and be handed over to a person---NOT left in a lobby, doorway, or unattended. Very kind, concerned, and professional men and women will help you from there."
http://www.wikihow.com/Drop-Off-an-Unwanted-Baby
I don't understand why someone would kill their baby when it is so easy to find a home for the baby. It's totally hassle-free. You drop the baby off at a fire-station or hospital and you're done with it. That's a helluva lot better than killing the baby. I guess some of these women are probably so uneducated that they don't even know about these options.