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1. In all actions concerning children, whether undertaken by public or private social welfare institutions, courts of law, administrative authorities or legislative bodies, the best interests of the child shall be a primary consideration.

2. States Parties undertake to ensure the child such protection and care as is necessary for his or her well-being, taking into account the rights and duties of his or her parents, legal guardians, or other individuals legally responsible for him or her, and, to this end, shall take all appropriate legislative and administrative measures.

3. States Parties shall ensure that the institutions, services and facilities responsible for the care or protection of children shall conform with the standards established by competent authorities, particularly in the areas of safety, health, in the number and suitability of their staff, as well as competent supervision.

The deprivation of liberty of an asylum-seeking, refugee, stateless or migrant child, including unaccompanied or separated children, is prohibited.

Any form of detention, including detention in the course of migration proceedings, must be ordered and approved by a judge or other judicial authority. Anyone detained in the course of migration proceedings must be brought promptly before a judicial authority, before which they should have access to automatic, regular periodic reviews of their detention to ensure that it remains necessary, proportional, lawful and non-arbitrary. This does not exclude their right to bring proceedings before a court to challenge the lawfulness or arbitrariness of their detention.

Detaining children because of their parents’ migration status will always violate the principle of the best interests of the child and constitutes a violation of the rights of the child. Children must not be separated from their parents and/or legal guardians. The detention of children whose parents are detained should not be justified on the basis of maintaining the family unit, and alternatives to detention must be applied to the entire family instead.

Effective mechanisms shall be in place to verify the age of persons deprived of their liberty. Assessments are to be conducted in a scientific, safe, child- and gender-sensitive and fair manner, avoiding any risk of violation of the physical and psychological integrity of the child, and giving due respect to human dignity. Prior to the outcome of an assessment, individuals should be accorded the benefit of the doubt such that they are treated as a child. In the event of remaining uncertainty following the outcome of an assessment such that there is a possibility that the individual is a child, she or he should be treated as a child.

Detention in the course of proceedings for the control of immigration is not per se arbitrary, but the detention must be justified as reasonable, necessary and proportionate in the light of the circumstances and reassessed as it extends in time. Asylum seekers who unlawfully enter a State party’s territory may be detained for a brief initial period in order to document their entry, record their claims and determine their identity if it is in doubt. To detain them further while their claims are being resolved would be arbitrary in the absence of particular reasons specific to the individual, such as an individualized likelihood of absconding, a danger of crimes against others or a risk of acts against national security. The decision must consider relevant factors case by case and not be based on a mandatory rule for a broad category; must take into account less invasive means of achieving the same ends, such as reporting obligations, sureties or other conditions to prevent absconding; and must be subject to periodic re-evaluation and judicial review. Decisions regarding the detention of migrants must also take into account the effect of the detention on their physical or mental health. Any necessary detention should take place in appropriate, sanitary, non-punitive facilities and should not take place in prisons. The inability of a State party to carry out the expulsion of an individual because of statelessness or other obstacles does not justify indefinite detention. Children should not be deprived of liberty, except as a measure of last resort and for the shortest appropriate period of time, taking into account their best interests as a primary consideration with regard to the duration and conditions of detention, and also taking into account the extreme vulnerability and need for care of unaccompanied minors.

The Committees stress that States parties should:

(h) Ensure that children are identified promptly in border controls and other migration-control procedures within the State’s jurisdiction, and that anyone claiming to be a child is treated as such, promptly referred to child protection authorities and other relevant services, and appointed a guardian, if unaccompanied or separated.

To make an informed estimate of age, States should undertake a comprehensive assessment of the child’s physical and psychological development, conducted by specialist paediatricians or other professionals who are skilled in combining different aspects of development. Such assessments should be carried out in a prompt, child-friendly, gendersensitive and culturally appropriate manner, including interviews of children and, as appropriate, accompanying adults, in a language the child understands. Documents that are available should be considered genuine unless there is proof to the contrary, and statements by children and their parents or relatives must be considered. The benefit of the doubt should be given to the individual being assessed. States should refrain from using medical methods based on, inter alia, bone and dental exam analysis, which may be inaccurate, with wide margins of error, and can also be traumatic and lead to unnecessary legal processes. States should ensure that their determinations can be reviewed or appealed to a suitable independent body.