What if we say....... You are not actually a "person" unless you vote Republican? You okay with that, if we decide this should be the criteria? Oh well, it doesn't matter if you're okay with it, we aren't going to give your voice any say in the matter, because you aren't a person! Constitutional rights? Pft... those are also for persons, not for you, because we've defined you as not being a person. Pretty neat huh?
Regardless of what you want to claim an unborn fetus isn't, you can't deny biology, which says an unborn fetus is a human being. A living male or female human being, with distinct and unique human DNA, with it's own fingerprints, brain, heart, blood, etc. Because you have incorrectly defined it as a "non-person" doesn't mean much, except that it gives you the justification you need to kill it. That's how I see it.
Three questions:
1. If it is not human, what kind of life form is it?
2. If it's not alive, why does it need to be 'terminated'?
3. If it is human life, why are we debating it?