OKLAHOMA CITY — Oklahoma on Wednesday implemented the strictest anti-abortion law in the nation, giving the country a preview of a possible post-Roe future. 

Gov. Kevin Stitt signed legislation to prohibit most abortions beginning at fertilization. 

Stitt signed House Bill 4327 that allows private citizens to sue anyone who “aids or abets” a woman seeking an abortion at any point in her pregnancy. The woman pursuing the procedure could not be sued. 

In a statement, Stitt said he was proud to sign the legislation. 

“From the moment life begins at conception is when we have a responsibility as human beings to do everything we can to protect that baby’s life and the life of the mother,” Stitt said.

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The law that took effect immediately and openly flouts longstanding abortion protections established by the U.S. Supreme Court has limited exceptions for medical emergencies, rape and incest. 

Under the law from Rep. Wendi Stearman, R-Collinsville, Oklahoma will become the first state in the nation where nearly all abortions are prohibited. In 2021, 5,950 abortions were performed in the state. 

Representatives from Oklahoma’s four abortion clinics said they would stop, if they had not already, terminating pregnancies immediately upon HB 4327 taking effect.

“Today, for the first time in nearly 50 years, abortion is illegal – at every stage of pregnancy – in an American state,” said Emily Wales, interim president and CEO of Planned Parenthood Great Plains. “People who can become pregnant now have fewer rights and fewer protections in Oklahoma than in any other state in the union.

“Legislators who, in overwhelming numbers, cannot become pregnant have just made lesser citizens of those who can.” 

WHAT WE KNOW:Oklahoma’s new abortion ban is the strictest in the nation

Abortion rights groups plan to sue

Abortion providers and reproductive rights groups have vowed to challenge the law in court where they are suing over two other anti-abortion laws Stitt signed this year. 

Center for Reproductive Rights Senior Legal Counsel Rabia Muqaddam said providers will ask the Oklahoma Supreme Court to issue a temporary injunction to halt enforcement of the “blatantly unconstitutional” law.

“We are facing a period of time where abortion will be inaccessible .. and it’s just unspeakable that anyone would pass a law to circumvent constitutional rights,” she said last week. 

POLL:Most Oklahoma voters don’t want total abortion ban Gov. Kevin Stitt signed 

The rate of abortions in Oklahoma has been on the decline since the 2000s.

But Texas-style abortion bans have proved difficult to stop in the courts, namely because of the civil enforcement piece that makes the laws so unique. 

With the U.S. Supreme Court indicating it is likely to overturn Roe v. Wade, providers are preparing for abortion access to become a patchwork of regulations across the nation with conservative states like Oklahoma mostly outlawing the procedure.