This report is based on the monitoring of U.S. Customs and Border Protection (CBP) operations in the Laredo, San Diego, Rio Grande Valley and Tucson Sectors at the request of CBP regarding the protection screening of unaccompanied children (UAC) from Mexico. The goal of these trips was to review and observe CBP’s methods for implementing the screening requirements of TVPRA 2008 and U.S. obligations of non-rejection or return of persons, including current screening practices, operational challenges faced by CBP in implementing the screening provisions, the tools and training available.