The Ninth Circuit determined that a North Korean who moved to South Korea, attended school, and accepted South Korean citizenship, was firmly resettled, and thus, ineligible for asylum. Section 302 of the North Korean Human Rights Act of 2004, which prohibits a finding that a North Korean is automatically a dual citizen of South Korea, does not prevent an Immigration Judge from making a firm resettlement finding.
The full text of Jang v. Lynch can be found here: http://cdn.ca9.uscourts.gov/datastore/opinions/2015/12/22/11-73587.pdf