That’s…a false equivalency. And I think the term means something other than what you think it means, or it doesn’t support your argument very well. Your post is also focusing on one word, and not the entire sentence.
It also says that it is the unlawful killing of a human being. A fetus, an embryo, a morula, even a zygote- those are all human beings, in their earliest development stage. Abortion ends their life.
Also, abortion isn’t legal in every state- there are states with restrictions, and states with outright bans. So why is it legal in some states, and not the others, if it is decided that abortion is murder?