; and (B) employees of the Department of Health and Human Services at such a facility shall immediately begin efforts— (i) to reunify unaccompanied children with sponsors in the United States; and (ii) verify family relationships to ensure that unaccompanied children who arrive with a nonparent family member may remain in the care of such nonparent family member. (c) National Standards on Transport, Escort, Detention, and Search (1) Review Not later than 180 days after the date of the enactment of this Act, the Commissioner, in consultation with stakeholder organizations that serve immigrant and refugee children and families, shall conduct a review of the U.S. Customs and Border Protection standards entitled National Standards on Transport, Escort, Detention, and Search issued in October 2015, to identify necessary improvements with respect to the treatment and care of noncitizen children in U.S. Customs and Border Protection custody. (2) Revision Not later than 90 days after the date on which the review required by paragraph (1) is completed, the Commissioner shall revise such standards to incorporate the improvements identified by the review. (3) Compliance Not later than 180 days after the revision under paragraph (2), each U.S. Customs and Border Protection facility that houses 1 or more noncitizen children shall attain compliance with the revised standards. (d) Facility requirements (1) In general The Commissioner shall ensure that each U.S. Customs and Border Protection facility that houses 1 or more noncitizen children is safe and sanitary and promotes an appropriate and healthy environment for children. (2) Children's area (A) In general The Commissioner shall ensure that each U.S. Customs and Border Protection facility that houses 1 or more noncitizen children includes— (i) a dedicated physical environment that is appropriate for children of all ages and stages of development (referred to in this paragraph as a children’s area )