Closed adoption (also called "confidential" adoption and sometimes "secret" adoption) is a process by which an infant is adopted by another family, and the record of the biological parent(s) is kept sealed. Often, the biological father is not recorded—even on the original birth certificate. An adoption of an older child who already knows his or her biological parent(s) cannot be made closed or secret. This used to be the most traditional and popular type of adoption, peaking in the decades of the post-World War II Baby Scoop Era. It still exists today, but it exists alongside the practice of open adoption. The sealed records effectively prevent the adoptee and the biological parents from finding, or even knowing anything about each other (especially in the days before the Internet). However, the emergence of non-profit organizations and private companies to assist individuals with their sealed records has been effective in helping people who want to connect with biological relatives to do so. Background and procedure 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. Many adopting parents in non-private adoptions would apply to a local, state licensed adoption agency. The agency may be a member of the national Child Welfare League of America (CWLA). The CWLA and many adoption agencies are still in operation today, but with an expanded and somewhat different agenda compared to past decades, as the government has largely taken over some of their previous responsibilities. Prior to adoption, the infant would often be placed in temporary and state-mandated foster care for a few weeks to several months until the adoption was approved. This would also help ensure that he or she was healthy, that the birthparent was sure about