Ivey noted in her statement that the new law may be unenforceable due to the Supreme Court’s Roe v. Wade decision that legalized abortion in all 50 states. But, the new law was passed with the aim of challenging that decision, Ivey said.

“No matter one’s personal view on abortion, we can all recognize that, at least for the short term, this bill may similarly be unenforceable,” Ivey wrote. “As citizens of this great country, we must always respect the authority of the U.S. Supreme Court even when we disagree with their decisions. Many Americans, myself included, disagreed when Roe v. Wade was handed down in 1973. The sponsors of this bill believe that it is time, once again, for the U.S. Supreme Court to revisit this important matter, and they believe this act may bring about the best opportunity for this to occur.”

Alabama lawmakers now lead the pack of legislators across several states who are producing measures to restrict abortion, such as Georgia’s recent fetal heartbeat bill. Many women don’t yet know for certain that they’re pregnant at six weeks into a pregnancy — the earliest a fetal heartbeat can be detected.

Republican state Sen. Clyde Chambliss, who ushered the bill through the chamber, repeatedly referred on the Senate floor Tuesday to a “window” of time between conception and when a woman knows for certain that she’s pregnant. The state senator said he believed that time was between about seven and 10 days.

Yashica Robinson, an obstetrician at the Alabama Women’s Center for Reproductive Alternatives who provides abortion services, said the law would have a “devastating impact” on patients. She said that she was unclear under what circumstances the law would allow an abortion based on “reasonable medical judgment” and health of the mother.

“I’m not clear about exactly what that means,” Robinson said on CNN’s “Anderson Cooper 360.” “I’ve already met instances where it is difficult for us to determine those things in the health care setting now, and it has resulted in delays in care.”

The bill’s passage Tuesday night elicited a wave of protest from a slew of Democrats, including 2020 hopefuls, and celebrities.

Washington Gov. Jay Inslee, Minnesota Sen. Amy Klobuchar, Vermont Sen. Bernie Sanders and former Texas Rep. Beto O’Rourke all ripped the legislation as unconstitutional. New Jersey Sen. Cory Booker, California Rep. Eric Swalwell, former Colorado Gov. John Hickenlooper, and Massachusetts Sen. Elizabeth Warren vowed to protect Roe.

New York Sen. Kirsten Gillibrand announced that she was headed to Georgia to “fight back, hard, on the frontlines” against “the greatest threat to reproductive freedom in our lifetimes.”

Former Democratic presidential nominee Hillary Clinton called the bill an example of “appalling attacks on women’s lives and fundamental freedoms.”

American Civil Liberties Union of Alabama Executive Director Randall Marshall promised Ivey a lawsuit, slamming the governor for the anticipated legal costs that the legislation would mean for the state from court challenges.

“By signing this bill, the governor and her colleagues in the state legislature have decided to waste millions in Alabama taxpayer dollars in order to defend a bill that is simply a political effort to overturn 46 years of precedent that has followed the Supreme Court’s Roe v. Wade decision,” he wrote in a statement Wednesday.

“We will not allow that to happen, and we will see them in court,