Abortion like religion is one of the few hard problems in the law.
Net: Yes abortion is a killing, yes it is intentional so it is murder. We murder people all the time for a variety of reasons. Women have murdered more children than men have one another. In these matters of conflict we measure costs. At present the decision is made by costs. This is not my opinion or preference it is a statement of fact. Abortion then is a political (local) not judicial issue (universal).
Here are posts in reverse order.
Closure on Abortion
More Closure On Abortion.
One Immoral Trade for the other.
Most controversial issue