“ending the constitutional right to abortion in the U.S.”
The basis of that assertion is the Supreme Court’s just-overturned Roe vs Wade decision. It was constitutional prior to that overturning.
https://www.history.com/topics/womens-rights/roe-v-wade
“The court held that a woman’s right to an abortion was implicit in the right to privacy protected by the 14th Amendment to the Constitution.”
The current Supreme Court decided the basis of Roe vs Wade was never constitutional.