You concede that unborn children are fully human. Then, you insist that the slaughter of millions of fully human unborn children is authorized by a so-called moral standing which can be bestowed or withdrawn by political sentiment. The affirmation of humanity is contradicted by degrading unborn children to subhuman status.
Kindly explain what is unsupported about associating fully human unborn children with human persons? The law recognizes many stages of human life but in none of them does it license the at will extermination of human beings.
A person has demonstrated unique conscious human-like mind with conscious perception in conscious human-like vocal or facial expressive capacity to other conscious human-like minds with the same. That happens at birth.
The reason this is important is as follows.
1. You might think that gastrulation would determine personhood for humans, because that is the early point in pregnancy when the number of embryos - one to four - is determined. After all, if there are two identical twins, though they have the same DNA, there are still two of them determined at gastrulation. But no. That's because no mindless organism is a person. A corpse is human, but it isn't a person, either.
2. When conjoined twins are born, the question is how many persons are born? There is only one organism or body, but when there are two heads, either both heads are functional or one isn't functional. When both are functional, each is capable of consciousness and perception which are demonstrated by human voice or facial expression and other objective organisms with such functionality can objectively observe that. Hence, there are two persons. But if one head is non-functional, it is called "parasitic," and only one person is claimed to be born. If the parasitic head can be removed without harming the well-being of the functional head/person, it is removed. When there are two functional heads/persons, if at all possible, doctors attempt to separate them, because each one deserves a separate body.
The human unborn has not demonstrated personhood, which is not mere life. You have to demonstrate conscious mind and perception of human type with human type expressive capacity. Once you have, you can still be a person if you're asleep or in a coma, because you already did that.
This, by the way, is the reason doctors who delivered babies traditionally spanked them on the backside when they came out, to get them to show that they could breathe air and use vocal communication.
We actually have no way to know whether or not liberty depends on life. The implanted embryo is only alive because it is implanted and receiving life from the woman's body. When it isn't implanted, it dies because it has no life of its own. But when it develops fully and is born, it doesn't die when separated from the woman's body, because it has a life of its own. That is simultaneously life and liberty. You don't choose between them or put them in some stupid hierarchical relationship.