The response points to data on abortion rates in states where adult adopted persons have long been able to obtain their original birth certificates (Kansas and Alaska), states that have amended their laws to allow adopted adults access to their information, and states that continue to keep records sealed. These data demonstrate no discernible relationship between a state’s policy on access to adoption information and the abortion rate within its borders. The Oregon Center for Health Statistics and Vital Records reports that the number of induced abortions performed in the state dropped 18.2 percent in the four years since passage of its law restoring access to records. The national decrease in abortions during the same period was 2 percent.  This trend is similar to abortion rate trends in England and Wales when adoption records were opened. Other states with new adoption records laws have not issued analysis of these trends, limiting the scope of this analysis.

You can read more below with the following link to their report:

• Agencies should advise birth parents making an adoption plan that identifying information may be disclosed to the child in the future.
• Agencies should support efforts to ensure that adults who were adopted have direct access to identifying information
• If state law prohibits the agency from providing the requested identifying information, the agency should advocate for legislative changes to such policies (6.22)