; (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; and (ii) the Inspectors General of the Department of Justice, the Department of Health and Human Services, U.S. Customs and Border Protection, and U.S. Immigration and Customs Enforcement; and (F) any other relevant Federal agency or office. (3) Meetings The Working Group shall— (A) hold meetings not less frequently than quarterly; (B) invite representatives of nongovernmental organizations that provide services to immigrant children to participate in such meetings as the Ombudsperson considers appropriate; and (C) provide to the Ombudsperson a summary of each such meeting. 7. Rule of construction Nothing in the Act shall be construed to preclude or limit Flores settlement agreement class counsel from conducting independent investigations or seeking enforcement actions relating to violations of the Flores settlement agreement in any appropriate district court of the United States.