Constitutionally it is not a power given to the feds.
Constitutionally that power is retained by the states or the people.
Constitutionally you have a right to personal privacy.
Constitutionally you have a right to choose what medical treatment you ask for or deny.
It is my contention that while it may, at some level, exist as a "states right" issue it ultimately falls on the will of the person affected.
The law cannot say when life begins. A mother can.
A fetus cannot live outside the womb. A person can.
An fetus is not yet a citizen or a person - it has no rights.
If you are a pregnant woman then you get to decide what you are willing to do to support a life - as long as it is within and totally dependent on you.
No one else can say what you must or must not do with or to a parasitic being that may or may not develope into a human being.
You don't get to use the carpool lane because you are pregnant - there has to be two people in the car.
You, as a future mother, can sue if someone else takes the life of the fetus within you wrongfully. You can also pay someone to remove the fetus prior to it becoming a human being.
It has always amazed me that people on both sides argue rights on this issue but both sides have very different views of when a multi-celled organism becomes a human being. If we can agree on that time frame then the issue is gone. You can't commit murder but it is only murder if it is a human life and you are not defending yourself.
Now, when does a sperm and an egg become a human being?
Why don't you answer your own question? And please don't tell us when a fetus is NOT a human being; tell us SPECIFICALLY when it IS a human being. Unfortunately, I don't expect an answer from you or your fellow travelers.