forth in the Convention on the Rights of the Child.197 The use of firewalls may be such a measure to ensure protection of the rights of the child. Firewalls are measures to separate States’ immigration enforcement activities from other activities, such as criminal justice processes. Such measures ensure that immigration authorities do not have to share information concerning the immigration status of each child with other institutions.198 (See chapter 8 on data collection and exchange. The Security Council Counter-Terrorism Committee notes in its 2018 Addendum to the 2015 Guiding Principles on Foreign Terrorist Fighters (S/2018/1177) that States should consider specific issues that may arise with respect to protecting and promoting the rights of the child in the context of biometrics, including when children’s biometric data is collected for child-protection purposes, and further considers putting in place specific, appropriate legal frameworks and 199 safeguards. 2.2 Key Recommendations 104. The following are key recommendations: Protecting the right to nationality a. Respect, protect and fulfill the right of every child to acquire a nationality, as set out in the Convention on the Rights of the Child, especially when he or she would otherwise be stateless. b. Reform nationality laws that are discriminatory, including to remove discrimination based on gender and/or marital status of the parents. National legislation should grant women the right to bestow their own nationality onto their children. c. Apply nationality law without discrimination and be guided by the best interests of the child as a primary consideration. Potential links of children or their parents to the foreign fighter phenomenon should never be grounds to deny nationality. d. Accept nationals and their children, respect the right of nationals to return to their own countries of origin and assist them, as necessary, to facilitate repatriation. e. Take actions to prevent children from becoming stateless. Establish effective safeguards and processes that protect any child from becoming stateless. 197 Ibid. 198 OHCHR and Global Migration Group Working Group on Migration, Human Rights and Gender, Principles and Guidelines, supported by practical guidance, on the human rights protection of migrants in vulnerable situations, available at www.ohchr.org/Documents/Issues/Migration/PrinciplesAndGuidelines.pdf, p.12. 48. f. In the absence of evidence to the contrary, there should be favorable consideration of parenthood when an individual presents him 199 Addendum to the 2015 Madrid Guiding Principles (2018), principle 38 (i).