Unaccompanied Alien Children: An Overview. Congressional Research Service, Library of Congress. William A. Kandel and Lisa Seghetti. August 18, 2015.
In FY2014, the number of unaccompanied alien children (UAC, unaccompanied children) that were apprehended at the Southwest border while attempting to enter the United States without authorization increased sharply, straining the system put in place over the past decade to handle such cases. In the first 8 months of FY2015, UAC apprehensions numbered 22,869, down 49% from the same period in FY2014. UAC are defined in statute as children who lack lawful immigration status in the United States, who are under the age of 18, and who either are without a parent or legal guardian in the United States or without a parent or legal guardian in the United States who is available to provide care and physical custody.
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