The main purpose of this legislation is to create a program aimed at preventing the trafficking, disappearance, or loss of unaccompanied alien children in the United States. The program, called the Unaccompanied Alien Child Anti-Trafficking Program, is designed to ensure the safety and well-being of these vulnerable children. Key provisions of the program include mandatory enrollment of all unaccompanied alien children released from custody, both those released after the law is enacted and those already present in the U.S.