There is no such thing as "states' rights" when the Constitutional rights of the individual citizens of these states are being threatened. These rights are NOT up to majority rule. You have to face the fact that your neighbor may not have chosen to embrace the beliefs that you have chosen to believe. Freedom of religion means that each individual may adopt the beliefs of his/her choice.
Saying that there is no such thing as states rights is absurd.
Please show me where the US Constitution gives the Federal Government the right to determine abortion rights.
I'll help you. Here is the 10th Amendment, in full.
Amendment X
“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.”
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Or freedom of religion does not mean we can each choose to worship in the way we wish. It means, in the words of our Constitution:
Amendment I
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.