; and (2) in cases in which detention or immigration custody is required— (A) to ensure that immigrant children are only detained or held in immigration custody in the least restrictive setting; (B) to advocate for the quick, safe, and efficient release of immigrant children from detention or immigration custody whenever possible; and (C) in any case in which an immigrant child is held in Department of Homeland Security custody together with his or her family unit, to advocate for the release of the child and concurrent release of the parent or legal guardian of the child not later than 72 hours after the time at which such child and parent or legal guardian were apprehended. (b) Independence The Office of the Ombudsperson shall be an impartial, confidential resource fully independent of— (1) the Office of Refugee Resettlement of the Department of Health and Human Services; and (2) the Department of Homeland Security. (c) Ombudsperson (1) In general The Office of the Ombudsperson shall be headed by an Ombudsperson, who shall be appointed by, and report directly to, the Secretary of Health and Human Services. (2) Qualifications The individual appointed as Ombudsperson shall have demonstrated experience in— (A) immigration law; and (B) child advocacy or child welfare. (3) Duties and authorities (A) Monitoring (i) In general The Ombudsperson shall monitor, including by making frequent site visits, for compliance with all applicable Federal and State laws, regulations, and standards relating to immigrant children in immigration custody. (ii) Inclusions The laws, regulations, and standards referred to in clause (i) include— (I) the Flores settlement agreement; (II) section 235 of the William Wilberforce Trafficking Victims Protection Reauthorization Act of 2008 ( 8 U.S.C. 1232 ); (III) the applicable provisions of the Prison Rape Elimination Act of 2003 ( 34 U.S.C. 30301 et seq. )