; and (ii) the written policies and procedures of Department of Homeland Security facilities. (3) Limitation The memorandum of understanding may only allow the Ombudsperson to share information with the Secretary of Homeland Security on a case-by-case basis, and with the informed consent of the immigrant child concerned, if the Ombudsperson determines that such information sharing may facilitate the release of the immigrant child from custody. (4) Evaluation Not later than 2 years after the Ombudsperson and the Secretary of Homeland Security enter into the memorandum of understanding required by this subsection, the Comptroller General of the United States shall evaluate the coordination between the Ombudsperson and the Secretary to determine whether such memorandum of understanding is sufficient to ensure the oversight and monitoring required by this Act. (5) Recommendations If the Comptroller General makes a determination under paragraph (4) that the memorandum of understanding is insufficient, the Comptroller General shall recommend actionable steps to be implemented— (A) to improve coordination between the Ombudsperson and the Secretary of Homeland Security; and (B) to ensure effectiveness of the mandate of the Ombudsperson. (b) Interagency working group (1) Establishment There is established an interagency working group to identify and discuss concerns relating to immigrant children in facilities. (2) Membership The Working Group shall be composed of representatives of— (A) the Department of Justice; (B) the Department of Health and Human Services, including the Director or a senior representative of the Office of Refugee Resettlement; (C) U.S. Customs and Border Protection; (D) U.S. Immigration and Customs Enforcement; (E) relevant oversight offices, including— (i) the Immigration Detention Ombudsman of the Department of Homeland Security