Immigration Enforcement: ICE Can Further Enhance Its Planning and Oversight of State and Local Agreements, Report to the Chairman, Committee on Homeland Security, House of Representatives [open pdf - 3MB]
From the Highlights: "The 287(g) program authorizes ICE [Immigration and Customs Enforcement] to enter into agreements with state and local law enforcement agencies to assist with enforcing immigration laws. The program expanded from 35 agreements in January 2017 to 150 as of September 2020. GAO [Government Accountability Office] was asked to review ICE's management and oversight of the program. This report examines (1) the extent to which ICE has developed performance goals and measures to assess the 287(g) program; (2) how ICE determines eligibility for 287(g) program participation and considers program resources; and (3) how ICE conducts oversight of 287(g) program participant compliance and addresses noncompliance."
Government Accountability Office: http://www.gao.gov/