; (4) how U.S. Customs and Border Protection measures the effectiveness of its programs to mitigate migrant deaths; and (5) the extent to which U.S. Customs and Border Protection engages Federal, State, local, and Tribal governments, foreign diplomatic and consular posts, and nongovernmental organizations— (A) to accurately identify deceased individuals; (B) to resolve cases involving unidentified remains; (C) to resolve cases involving unidentified persons; and (D) to share information on missing persons and unidentified remains, specifically with the National Missing and Unidentified Persons System (NamUs).