Lets say maybe I was going to have a girl...maybe...and just maybe the "mother" does not want to have this "kid". Can’t I drop the baby on the front steps of a hospital and leave? Hypothetically. This is not a matter of ethical dilemmas people, so a strait answer. What is the law for this? And for how young does the “child” need to be?

In most states you can surrender a child to a hospital.