Are you suggesting that government's failure to prosecute is the evidence necessary to establish that abortion is not killing?
What government does or does not do establishes nothing.
The question, if there is one, is at what point does life begin. I think the answer is clear that life begins at conception. The organism is forming and growing from that point on.
Any other conclusion, I believe, is agenda driven. It is beyond me how "science" can throw up its hands in defeat and not admit that life begins when the organism begins to form and grow.
To suggest that life begins when a fetus is viable is simply absurd - that fetus began long before it became viable.
If we are unwilling to concede that a growing fetus hours or days or weeks old is a living organism, how can we possibly conclude that an amoeba is alive?
It may be a legal question whether or not this is killing we allow in our culture - such as hunting or stepping on ants ... but to suggest that it is not killing is intellectually dishonest and morally bankrupt.
Well, tell me why women obtaining an abortion are not prosecuted. There must be a reason.