The pro-choice position is something I really don't understand, so I'm hoping someone will comment and clarify this to me. 

I can understand someone being pro-abortion.  They don't believe a fetus is a person, and so killing it is no different from birth control, so abortion should not be outlawed.

But someone like Rudy Giuliani has said he believes that abortion is WRONG, but the state should not outlaw it.  So here's what I don't get:

If you believe that abortion is indeed wrong because it is murder, then you really believe that fetuses are people.

So then if you believe that fetuses are people, how can you say that it's okay for the state to allow people to get murdered within its borders?

What difference is there between that and murdering infants and children?  We outlaw and punish that.

How does it differ from tourists visiting this country?  They are not American citizens yet people can't just go around murdering them.

I'm not trying to argue, I just really don't understand it, and I'm hoping someone will explain it to me.  Until then I have more respect even for people who are pro-abortion than ones who are simply pro-choice.