35. 在美国，海关及边防人员和边境巡逻人员负责认定哪些人为无人陪伴儿童。行政程序完成后，将儿童安置在照顾他或她的机构，如果在法律规定的有限情况下允许，可安排儿童自愿返回。移民儿童在海关和边防拘留的时间不得超过72 小时，并分配住宿。然而，他们在边境巡逻机构临时地点或在影响其发展和精神健康条件下拘留的时间可能很长。34
35. In the United States, Customs and Border Protection officers and Border Patrol agents identify individuals as unaccompanied children. After processing the administrative case, they either transfer the child to an institution which will take care of him or her or, if permitted under the limited circumstances provided by law, arrange for the child’s voluntary return. Migrant children should not be in the custody of Customs and Border Protection for more than 72 hours while they are assigned accommodation. However, they do stay in the custody of the Border Patrol for extended time periods in temporary locations and under conditions that affect their development and emotional health.34