DHS Had Authority to Deploy Federal Law Enforcement Officers to Protect Federal Facilities in Portland, Oregon, but Should Ensure Better Planning and Execution in Future Cross-Component Activities [open pdf - 3MB]
From the Highlights: "Beginning on May 29, 2020, the Federal Protective Service (FPS) experienced challenges protecting Federal property in Portland, Oregon. FPS requested assistance from DHS law enforcement officials. Our objective was to assess the authority, preparation, and activities of DHS law enforcement officers deployed to protect Federal property. [...] We made two recommendations to improve DHS' preparedness for protecting Federal property."
Department of Homeland Security, Office of Inspector General, Report No. OIG-21-31
Department of Homeland Security Office of Inspector General: https://www.oig.dhs.gov/