Ethnocentrism in the US has an impact on adoption policies. The adoption of interracial and international children have been debated for several decades. Specifically, associations around the globe have focused on the adoption of Black children as the point of contention. What this means for children in the US is that many Black children age out of the foster system and are never adopted. In the United States, the majority of adopting parents are White. Around the world, interracial adoption has increased popularity. However, many associations have opposed transracial adoption instead of choosing to support race matching. Race matching in the United States occurs when the child's perceived race is "matched" with a prospective adoptive parent or parents, which is problematic for mixed birth parents and so-called "white passing" mixed children.