This paper discusses the policy of matching as it has influenced American adoption practice. The word “matching” is shorthand for a set of assumptions built around the principle that when a child is “like” her or his adoptive parents, the adoption will be successful. The policy involves establishing criteria for likeness; traits upon which likeness has been based include, explicitly, race, ethnicity, and religion, and, implicity, class. My article shows how, as race became the primary criterion of likeness, matching linked adoption with broader issues in American culture and politics. Resting on a biological model, racial matching reflects changing views of racial equality and of “multiculturalism.” My paper also asks how the increasingly articulated experiences of adoptive parents, birth parents, and adoptees in the 1980s and 1990s impinge on the implementation of matching by social workers, lawyers, and other experts involved in adoption. In conclusion, I speculate on the future interconnections between racial matching, genetic engineering, and ideologies of “biological destiny” reappearing in American culture.