Fetal tissue in biomedical research will face new restrictions, the Trump administration said June 5 in a major win for abortion opponents.

The policy stems from a nine-month audit and review of research funded by the National Institutes of Health involving the use of fetal tissue from an elected abortion. The Department of Health and Human Services is putting a ban on fetal tissue for any scientists who are direct employees of the HHS, who are known as intramural researchers,...