Whistleblower Protection: DHS Should Ensure Timely Resolution of Retaliation Complaints

What GAO Found The Department of Homeland Security (DHS) Office of Inspector General (OIG) has not ensured timely investigations of whistleblower retaliation complaints. OIG took over 3 years to investigate the majority (39 of 73) of the cases it opened and closed in fiscal years 2018 through 2025. OIG officials told GAO that case complexity and limited staff affected some case time frames, and that they have focused more on investigation quality and thoroughness than timeliness.