Researchers should be mindful that use of NamUs is not federally mandated, therefore, the NamUs database only contains information on individuals who have been voluntarily reported as missing, unidentified, or unclaimed to NamUs. The NamUs database does not include information on all missing, unidentified, and/or unclaimed persons nationwide. Data fields to capture race, ethnicity, age, sex assigned at birth, and other demographic markers reflect the information entered into the NamUs database by the reporting party. Publicly viewable cases do not include those that have been resolved, as once a NamUs case is resolved it is archived. Archived cases are restricted from public view. Case records are subject to the Freedom of Information Act (FOIA), but the Office of Justice Programs (OJP) reviews any non-public records requested under FOIA and redacts all information that is subject to relevant FOIA exemptions. These exemptions include protections for privacy and for law enforcement records.