National Background Investigations Bureau (NBIB)

The National Background Investigations Bureau (NBIB) was a U.S. government agency responsible for conducting background checks on individuals seeking security clearances for access to sensitive information and facilities. It managed the vetting process to ensure that trusted personnel do not pose security risks. In 2019, NBIB was integrated into the Office of Personnel Management (OPM), streamlining background investigations under federal oversight. Essentially, NBIB's role was to assess an individual's history, behavior, and reliability to confirm they are suitable for confidential roles within the government.