Alexander Aleinikoff - dean of the Georgetown University law school - has accepted a position with the United Nations as the "deputy high commissioner in the Office of the U.N. High Commissioner for Refugees in Geneva". Per his statement (link):
"As many of you know, refugee and asylum law has been a central focus of my scholarship and research... The first course I taught at the Law Center was...
... (USCIS).
The other co-leader is Alexander Aleinikoff, dean of Georgetown University Law Center, who was Executive Associate Commissioner of Programs at the Immigration and Naturalization Service (INS) during the Clinton years. He's also associated with the Migration Policy Institute.