"The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people."
Governmental "powers" are not the same as individual, God-given, unalienable, "rights." You're mixing apples and oranges.
Not really, merely pointing out that this cat can (eventually, hopefully) be skinned either way.
1) pro-life:Life begins at conception
Unalienable right-to-life,
5th and 14th amendments apply.
2) pro-choice:life begins at birth
10th amendment applies.
Either way you slice it, both arguements could be used to over-turn Roe vs. Wade.
Ideally, choice #1. But choice # 2 is better than where we currently stand today.