Gee, look what I started...
I'm NOT a religious person, I guess I'm a humanist.
It seems to me that the U.S. Constitution and Declaration of Independance are the basis for deciding whether Abortion should or should not be legal. The declaration of Independance guanrantees that every person has a right to life. Soooo the question is "what is or is not a person". This can only be determined by philosophy, science and law, not by religious beliefs.
If a fetus/embryo/whatever you call it is determined to be a person, then no one has the right to terminate it. If it is not determined to be a person then it can be terminated.
All I'm saying is the the criteria for this determination (back in the 1970s) was poor, but was based on the best science of the day. Nowadays there may be a more objective way of making this determination.
Equally, if it were to be determined that it is a person, even if a women is raped she should not be allowed to have pregnancy terminated. This is balanced out by the same science which can now positively determine who tha rapist is. Simply make rape punishable by death, castration, or whatever the victim feels is appropriate.
Of course to safe guard against the possiblity of false accusations, it would be require a signed, witness and notarized form of consent before copulation.
That'd throw a little ice water on everyone's passion. Which might not be such a bad thing.