Probably most of us are familiar by now with Obama’s infamous (and cowardly) response—”answering that… is above my pay grade”—to the question, “At what point does a human baby get rights in your view?”

According to a recent story in the Associated Press (OK, not so recent; I just now got around to finishing this post, after starting it weeks ago), Joe Biden, in an attempt to walk the tight-rope of appeasing people on both sides of the abortion issue, made a nearly perfect invocation of what I will now call the “Biden Fallacy.”

Asked a similar question, Biden answered,

I’m prepared as a matter of faith to accept that life begins at the moment of conception. But that is my judgment.  For me to impose that judgment on everyone else who is equally and maybe even more devout than I am seems to me is inappropriate in a pluralistic society.

The problem with this line of reasoning is that it mistakes a sufficient condition for a necessary condition.  For many people, their faith is the guiding principle for why they oppose abortion.  Their faith alone gives rise to their position on abortion, and for that reason it is a sufficient condition for a pro-life stance.  But it is certainly not a necessary condition.  One can have a pro-life stance for a number of different reasons.

Take Allen Atheist, for instance.  Perhaps Allen is a microbiologist who opposes abortion because he is convinced from a scientific standpoint that life begins at conception.  Or, perhaps Allen is a member of PETA, whose staunch animal rights activism has led him to the conclusion that human fetuses are also deserving of protection.  Or, perhaps Allen is a member of the NAACP who, while not believing that life begins at conception, is disturbed by the disproportionate number of black children aborted, and sees the only solution as banning abortion altogether.  Or, perhaps Allen is an environmentalist who believes that the world is undergoing massive, catastrophic cooling, and the only thing that can save the planet is billions of more people daily exhaling carbon dioxide.  In other words, there can be any number of sufficient reasons for a person to oppose abortion.   One need not derive his position from religion.  It may be a sufficient condition, but it is by no means a necessary condition.

That is where Biden confuses the matter, either intentionally or unintentionally.  Biden would have us think that simply because one can come to a pro-life position based on religious belief, one must have that religious belief to be pro-life.  As though the only reason one would oppose abortion is out of religious committment, and as though, in order for government to protect unborn life, it would have to impose a religious viewpoint on others.  Not quite, Joe.