“Although I’m very open, [his birth mother] drops into and out of our lives as she needs to,” Miller said. After one long absence, when her son was nine years old, she paid for his birth mother to fly from Colorado to California and stay with them for ten days. Miller doesn’t give up, she said, “because I think we need to honor the pieces that we didn’t provide in the makeup of the child.”
Historically, the four primary reasons for married couples to obtain a child via closed adoption have been (in no particular order) infertility, asexuality, having concern for a child's welfare (i.e. would not likely be adopted by others), and to ensure the sex of the child (a family with five girls and no boys, for example). In 1917, Minnesota was the first U.S. state to pass an adoption confidentiality and sealed records law. Within the next few decades, most United States states and Canadian provinces had a similar law. Usually, the reason for sealing records and carrying out closed adoptions is said to be to "protect" the adoptee and adoptive parents from disruption by the natural parents and in turn, to allow natural parents to make a new life.
Oftentimes the birth and adoptive parents will sign a Post-Adoption Contract (sometimes called an Open Adoption Agreement), putting in writing any promises regarding contact after the adoption is finalized. Even in those states which do not expressly have laws in this area, these agreements can usually be prepared if the parties desire to formalize the agreement. In an increasing number of US states, courts will find these agreements legally enforceable, as long as they serve the best interests of the child. It is not unusual for these agreements to be more like "handshake" agreements, although they offer less protection to a birth parent if the adoptive parent's promises were not honored.
Open adoption is a form of adoption in which the biological and adoptive families have access to varying degrees of each other's personal information and have an option of contact. While open adoption is a relatively new phenomenon in the west, it has been a traditional practice in many Asian societies, especially in South Asia, for many centuries. In Hindu society, for example, it is relatively common for a childless couple to adopt the second or later son of the husband's brother when the childless couple has limited hope of producing their own child.