Assume that the SC returns the abortion decision to the states. It seems safe to assume that conservative states will pass laws defining the fertilized egg to be a human being, make abortion manslaughter, ban abortion and install assorted punishments for getting or giving an illegal abortion. All actions have unintended consequences. List and discuss some of those unintended consequences that will happen in those states that ban abortion.
It doesn't matter if they define the egg to be a human being. If it isn't a person, it doesn't have rights to life, liberty, and property, while a woman is a person with those rights. The Constitutional definition of a person will still "trump" whatever the state says. The state does not have the power to claim that the egg is a person if the Constitution contradicts that. The Census clause says all persons in the US must be counted by actual enumeration. Embryos and fetuses cannot be so counted, so somebody will take every one of the state laws up the chain of courts to the SC.
If a fetus were a real person, it would have to have a certificate, if not of birth, then of life.
It would have to be named and registered.
It would have to have citizenship, social security registration.
The pregnant woman would be eligible to get welfare for her child.
She would be able to get life insurance for the child and would be owed payment if she had a miscarriage.
It would be problematic to jail a pregnant woman convicted of a crime,
because the state would be incarcerating an innocent child.
Anyone could claim citizenship for an embryo conceived on a honeymoon to the US,
including such states as Guam and such territories as some in the Pacific Ocean which are popular honeymoon destinations.
And that's just a start. . . .