Particularly concerning about the recent surge is that the children making the perilous migration journey are now younger than in years past. It has become common for children as young as 4-10 years old to be picked up and arrested by the U.S. Border Patrol. Additionally, a higher percentage of the children are girls, many of whom arrive pregnant as a result of sexual violence. The United Nations High Commissioner for Refugees (UNHCR) recently conducted research with this population and found that 58 percent of the children interviewed raised international protection concerns.