750 ILCS 50/18.04
The General Assembly recognizes that it is the basic right of all persons to access their birth records, and, to this end, supports public policy that allows an adult adoptee to access his or her original birth certificate. The General Assembly further recognizes that there are circumstances under which a birth parent may have compelling reasons for wishing to remain anonymous to a child he or she surrendered for adoption. In an effort to balance these interests, the General Assembly supports public policy that releases a non-certified copy of the original birth certificate to an adult adopted person upon request unless a specific request for anonymity has been filed with the Registry by a birth parent named on the original birth certificate .
750 ILCS 50/18.04