Nixon said that legislators showed a “callous disregard for women” by granting no exception for rape and incest victims.
Legislation proposed in the Missouri House would outlaw abortions performed solely because of the sex or potential genetic abnormality of the fetus.
Nixon has until July 14 to act.
Bill passes with a 121-33 vote.
The bill would ban abortions after the 20th week of pregnancy unless the abortion was necessary to save the life of the mother.