Annual Report on the Impact of the Homeland Security Act on Immigration Functions Transferred to the Department of Homeland Security [open pdf - 706KB]
"Section 478 of the Homeland Security Act of 2002, Pub. L. No. 107-296, 116 Stat. 2135 (6 U.S.C. 298), requires that the Secretary of Homeland Security submit an annual report that identifies the impact of the transfer of immigration functions from the Department of Justice, Immigration and Naturalization Service to the Department of Homeland Security (DHS). This report addresses activities during Fiscal Year (FY) 2017."
U.S. Citizenship and Immigration Services: https://www.uscis.gov/