Audit of Department of Homeland Security's Fiscal Years 2014 and 2015 Conference Spending [open pdf - 2MB]
From the Highlights: "Public Law (P.L.) 113-76, 'Consolidated Appropriations Act, 2014,' and P. L. 113-235, 'Consolidated and Further Continuing Appropriations Act, 2015', require the Department of Homeland Security to report events-related spending. Our audit objective was to determine whether DHS' spending on selected hosted or sponsored conferences for fiscal years 2014 and 2015 was appropriate, reasonable, necessary, and in compliance with Federal regulations. [...] We made five recommendations that, when implemented, will improve conference reporting and recordkeeping and ensure the accuracy and timeliness of conference submissions."
Department of Homeland Security, Office of Inspector General, Report No. OIG-17-94
Department of Homeland Security Office of Inspector General: https://www.oig.dhs.gov/