On April 24, 2019, President Trump signed Executive Order 13869, transferring the federal government's background investigation operations from the Office of Personnel Management, a civilian agency, to the Department of Defense. This structural consolidation moved security clearance vetting and employment background checks—functions that had operated under civilian oversight for decades—under military department authority. The order represented a significant reorganization of investigative infrastructure previously managed through OPM's Federal Investigative Services division.

The direct effects extended to millions of federal employees, contractors, and job applicants seeking security clearances or federal positions. Every background check conducted for national security purposes, from routine civil service positions to Top Secret clearance holders, fell within the scope of this transferred authority. Contractors working on sensitive government projects also faced investigation processes now controlled by DoD rather than a civilian personnel office. The shift altered the institutional culture surrounding these investigations, placing them within a military command structure rather than a dedicated civilian investigative agency.

This action reflects a broader pattern visible across Trump administration policies aimed at consolidating executive power and reducing traditional civilian oversight mechanisms. The visa cancellations targeting Costa Rican journalists, gerrymandering decisions, and mass pardons of January 6 insurrectionists demonstrate a consistent approach of using executive authority to reshape democratic institutions and accountability structures. The background investigation transfer similarly removed a check on executive power by moving sensitive vetting functions away from independent civilian review toward an agency directly within the executive chain of command, reducing institutional separation and potential resistance to politicized investigations.

No significant legal challenges have successfully blocked the executive order's implementation, though oversight advocates raised constitutional concerns about removing civilian control from security clearance determinations. The transfer proceeded largely without congressional intervention, operating as a valid executive reorganization within presidential authority, though some argued the shift lacked the statutory authorization typically required for such major restructuring.