A thought experiment, I can't find any case law on this, but I suspect we'll see some soon. Pretend you're on the jury:
A pregnant woman gets hit by a drunk driver. She survives, the unborn baby dies. Can the drunk driver be charged with murder? If he is, can he argue that it can't be murder because a fetus is not a human being and has no right to life?
For the record, I'm generally opposed to abortion, but I don't think I'm smart enough to decide for everybody. I do think that the first three months should be enough time to decide what to do. After that it, its a matter of saving the mother's life or similar situation.