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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.

Unless it is evidently frivolous or groundless, every request or complaint shall be promptly dealt with and replied to without undue delay.

Article 2, paragraph 3, requires that in addition to effective protection of Covenant rights States Parties must ensure that individuals also have accessible and effective remedies to vindicate those rights. Such remedies should be appropriately adapted so as to take account of the special vulnerability of certain categories of person, including in particular children. The Committee attaches importance to States Parties’ establishing appropriate judicial and
administrative mechanisms for addressing claims of rights violations under domestic law. The Committee notes that the enjoyment of the rights recognized under the Covenant can be effectively assured by the judiciary in many different ways, including direct applicability of the Covenant, application of comparable constitutional or other provisions of law, or the interpretive effect of the Covenant in the application of national law. Administrative mechanisms are particularly required to give effect to the general obligation to investigate allegations of violations promptly, thoroughly and effectively through independent and impartial bodies. National human rights institutions, endowed with appropriate powers, can contribute to this end. A failure by a State Party to investigate allegations of violations could in and of itself give rise to a separate breach of the Covenant. Cessation of an ongoing violation is an essential element of the right to an effective remedy.

In general, the purposes of the Covenant would be defeated without an obligation integral to article 2 to take measures to prevent a recurrence of a violation of the Covenant. Accordingly, it has been a frequent practice of the Committee in cases under the Optional Protocol to include in its Views the need for measures, beyond a victim-specific remedy, to be taken to avoid recurrence of the type of violation in question. Such measures may require changes in the State Party’s laws or practices.

We commit to ensure that any detention in the context of international migration follows due process, is non-arbitrary, based on law, necessity, proportionality, and individual assessments, is carried out by authorized officials, and for the shortest possible period of time, irrespective of whether detention occurs at the moment of entry, in transit, or proceedings of return, and regardless of the type of place where the detention occurs. We further commit to prioritize non-custodial alternatives to detention that are in line with international law, and to take a human rights-based approach to any detention of migrants, using detention as a measure of last resort only.

To realize this commitment, we will draw from the following actions:

(g) Ensure that all governmental authorities and private actors duly charged with administering immigration detention do so in a way consistent with human rights and are trained on non-discrimination and the prevention of arbitrary arrest and detention in the context of international migration, and are held accountable for violations or abuses of human rights.

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.