We identified deficiencies in E-Verify’s processes for confirming identity during employment verification. E-Verify’s photo matching process is not fully automated, but rather, relies on employers to confirm individuals’ identities by manually reviewing photos. We attribute these deficiencies to USCIS not developing or evaluating the plans and internal controls needed to improve its processes and detect, track, and investigate system errors. Until USCIS addresses E-Verify’s deficiencies, it cannot ensure the system provides accurate employment eligibility results. We made 10 recommendations to improve E-Verify’s accuracy, internal controls, and workload capabilities. USCIS concurred with all 10 recommendations.