The science definition of life encompasses the human unborn, since the unborn shows all the criteria of life. A single cell bacteria is considered alive. Each cell in the embryo is alive in that sense, while combined it also is alive. The political strategy is to ignore science, and then say the unborn is not a person until it is born, is pseudo-science. The Atheists, who claim to be on the side of science, need to step up.
In terms of the argument of personhood, if you compare the unborn during pregnancy, to a new born baby, the new born baby is much more dependent on the efforts of the mother, than it is the unborn The unborn is much more autonomous. It takes what it needs from the mother, with no conscious effort by the mother. Mothers can ignore the unborn for months and may not even know she is pregnant, since unborn is quietly self sufficient within the matrix of her body. Some women will even continue to burn the candle from both ends, while pregnant. The unborn adapts, often with little long term harm. The born baby, on the other hand, is very vulnerable. It is cut off from its unborn instincts, and now has many new dependencies. Lefties always think upside down and fool themselves.
Pregnancy is a well understood phenomena. Getting pregnant is not rocket science. The Political left pushes sex education in school, even for small children, they say to help avoid disease and unwanted pregnancy. There are many ways, taught in school, to avoid pregnancy, that even a first grader can recite. How about "adult" women learn to be applied and proactive, based on the sex education taught to them as small children in schools? This could help solve the problem. Adults who cannot apply, what is taught to children, may not be able to make good choices in other matters. Others may have to choose for them. This is what is happening.
Many people do not agree with abortion, while there are many others who do. One compromise, is to buffer those who do not want anything to do with abortion, by placing all the responsibilities, and all the expenses just on those who want abortion. If you wish to play, you need to pay. A woman's right to choose, stops at forcing others to pay; via common insurance and taxes. This overreach is creating the backlash, since rights stop when they deprive others of rights. You are expecting others to pay, even if abortion is against their conscience. This takes away their human and religious rights. The solution is for women to take care of their own business, like an adult. Spoiled dependent children are not the best judges for anything. If a parent has to supports a child, they have a say in what the child can and cannot do.
The Political Left has perfected a way to buy votes, using other people's money, including that of their political opponent. How many who want abortion will vote Left? And how many of these think everyone needs to pay? This robbery theme is common to all the Left's social engineering scams. It is also what is driving the national debt house of cards toward collapse. The Constitution only says to provide for the common defense; provide equals money. Promote the general welfare, can be done via volunteers and spokesmen. Promote is not the same as provide. Only one involves common tax money.
One starter solution is to separate tax revenue, by political party, with each party only able to use their tax revenues, from their voter base, for their own needs. Abortion, which is most favored by the Left, would be your own private concern paid for by the Left. But the Left would lose extra stolen money used to promote their candidates. The Left leadership does not wish to stop stealing, so those who seek abortion for are left in the middle, between conflicting needs and rights.
The idea of allowing the States to decide, ends up placing more responsibility on Left leaning states, to pay for their own freebies for votes. This is moving the bar in the proper direction. This makes abortion available where wanted, and isolates were not want. It also places all the expenses on the shoulders of those who use it to get votes and those who want it. However, the Left States will see more debt and will have to adjust, until abortion is legal in places but minimized; not over promoted with free money.