It is simple to me.
Remember how it can be shown that low intelligence is linked to violence?
And we saw that early trauma in unwanted, uncared for 2 year olds, will chop their intelligence
and therefore increase the violence in society.
So, Guns don't prevent murder nearly as well as a nurtured pre-verbal period and careful exposure to intelligence increasing exercises.
So, I think it is a Constitutional mandate to decrease un-wanted births by as many means, as possible. Think about it. China has a replacement policy only, strictly enforced. WE don't want that, but WE are indeed, fully capable of having that if we wish.
And the only arguments against widest availability of birth prevention are specious, at best.