; (B) is in writing; (C) includes an explanation of the justification for the disclosure; (D) is included in the file of the child; and (E) is either— (i) authorized by the child or an approved sponsor of the child, in accordance with section 235 of the William Wilberforce Trafficking Victims Protection Reauthorization Act of 2008 ( 8 U.S.C. 1232 ) and the Health Insurance Portability and Accountability Act ( Public Law 104–191 ; 110 Stat. 1936); or (ii) provided to a duly recognized law enforcement entity to prevent imminent and serious harm to another individual. (e) Prohibition on separation The Secretary may not remove a child from a parent or legal guardian solely for a purpose as follows: (1) The purpose of furthering the policy objective of deterring individuals from migrating to the United States. (2) The purpose of furthering the policy objective of promoting compliance with the immigration laws. (f) Family unit tracking number (1) In general The Secretary shall assign a family unit tracking number to each member of an apprehended family unit, including— (A) an apprehended spouse; (B) an apprehended parent or legal guardian; (C) a child of an apprehended parent or legal guardian; and (D) a sibling group. (2) Requirements The Secretary shall ensure that a family unit tracking number— (A) is transferrable; (B) may be shared easily among the data systems of— (i) U.S. Customs and Border Protection; (ii) U.S. Immigration and Customs Enforcement; and (iii) the Office of Refugee Resettlement; and (C) is included on the paperwork of each member of an apprehended family unit and is not deleted or altered. (g) Monitoring The Secretary shall— (1) allow humanitarian organizations and State and local child welfare agencies in the jurisdiction in which an apprehended child is located to conduct at least 1 unannounced, independent inspection each month of any Department facility that houses 1 or more children