Cross-Border Children: Contemporary Challenges of Migration Processes

This article examines the emerging phenomenon of "cross -border children" — children of migrants, in this case Brazilians, who are separated from their guardians due to protective measures imposed by foreign states, particularly the United States. Based o n a sample of cases monitored between 2019 and 2025, the research exposes institutional and legal gaps in Brazil that hinder family reunification and undermine the fundamental rights of these children. The study underscores the urgent need to identify and understand the risk factors contributing to this phenomenon and to develop specific protocols, legal instruments, and public policies that address this evolving migratory reality.