As reported in Korea Times:

Of 111,148 ethnic Koreans legally adopted into American families, 14,189, or 12.8 percent, have failed to obtain American citizenship and are left vulnerable to deportation, said Rep. Shim Jae-kwon of the Democratic Party of Korea (DPK).

As someone else recently said, adoption without citizenship is human trafficking.  Leaving adoptees hanging in the wind due to the failures of those who adopted, oversaw, and administered it is a crime against humanity.

http://koreatimes.co.kr/www/news/nation/2017/10/113_237441.html