Scientists, clinicians, and bioethicists are worried about how so-called personhood measures would limit access to certain types of contraception, research involving stem cells, and access to fertility treatments. While these measures have been struck down in Colorado, South Dakota, California, and Mississippi, the bill signed into law in Oklahoma in February deserves critical scrutiny, particularly into the ways these legal measures influence eligibility for clinical research. Oklahoma’s bill states that the laws of the state “shall be interpreted and construed to acknowledge on behalf of the unborn child at every stage of development all the rights, privileges, and immunities available to other persons, citizens, and residents of this state.”