S.C. Gov. Nikki Haley signed into law Wednesday a ban on abortion at 20 weeks of pregnancy or later.
The ban includes no exceptions for cases of rape or incest – omissions that opponents say will harm some of the state’s most vulnerable women.
Courts in other states have struck down similar laws as unconstitutional.
The U.S. Supreme Court, which has said abortion is legal through the second trimester, has not weighed in on whether 20-week abortion bans are legal.
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Under the law, an abortion would be allowed at 20 weeks of pregnancy or later, calculated as the weeks past fertilization, in the case of a severe fetal anomaly that would prevent the child from surviving with or without treatment.
The law also allows exceptions if a doctor says an abortion is necessary to protect the mother from death or severe bodily impairment.