The law boldly defies new FDA rules implemented this week on abortion drugs.
The signing of the bill, Senate Bill 1324, is likely to jump-start a federal court case that blocked a previous version of the legislation.
The bill bars doctors from prescribing the drug commonly known as RU-486 after seven weeks of pregnancy and requires it to be taken only at Food and Drug Administration-approved doses in effect until this week. It also requires the two doses of the drug to be taken at a clinic, while providers now send the patient home with the second pill to be taken days after the first.