; and (ii) 90 minutes of child welfare practice training that is evidence-based and trauma-informed. 104. Presumptions The presumptions described in this section are the following: (1) Family unity There shall be a strong presumption in favor of family unity. (2) Siblings To the maximum extent practicable, the Secretary shall ensure that sibling groups remain intact. (3) Detention In general, there is a presumption that detention is not in the best interests of families and children. 105. Required policy for locating separated children (a) In general Not later than 180 days after the after the date of the enactment of this Act, the Secretary shall publish final public guidance that describes, with specificity, the manner in which a parent or legal guardian may locate a child who was separated from the parent or legal guardian under section 102(a). In developing the public guidance, the Secretary shall consult with the Secretary of Health and Human Services, immigrant advocacy organizations, child welfare organizations, and State child welfare agencies. (b) Written notification The Secretary shall provide each parent or legal guardian who was separated, with written notice of the public guidance to locate a separated child. (c) Language access All guidance shall be available in English and Spanish, and at the request of the parent or legal guardian, in the language or manner that is understandable by the parent or legal guardian. 106. Required information for separated families Not less frequently than once every month, the Secretary shall provide the parent or legal guardian of a child who was separated, the following information, at a minimum: (1) A status report on the monthly activities of the child. (2) Information about the education and health of the child, including any medical treatment provided to the child or medical treatment rec­om­mend­ed for the child. (3) Information about changes to the child’s immigration status. (4) Other information about the child, designed to promote and maintain family