The ratio of dual-parent orphans in sub-Saharan Africa alone to the total annual number of intercountry adoptions by American citizens (approximately 10,000) is 910:1. International adoptions into the United States are miniscule compared to the number of children in sub-Saharan Africa who have lost both parents. Current rates of intercountry adoption are barely making a dent.
Source: Adoption Advocate No. 57: Reconsidering Intercountry Adoption: Who wants to Adopt and Who Could Be Adopted? Published March 2013 by Christopher Balding. Read more.