**GAO-08-67**                      Published: Oct 15, 2007. Publicly Released: Oct 15, 2007.                  

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## Highlights

Officers with U.S. Immigration and Customs Enforcement (ICE) within the Department of Homeland Security (DHS) investigate violations of immigration laws and identify aliens who are removable from the United States. ICE officers exercise discretion to achieve its operational goals of removing any aliens subject to removal while prioritizing those who pose a threat to national security or public safety and safeguarding aliens' rights in the removal process. The General Accountability Office (GAO) was asked to examine how ICE ensures that discretion is used in the most fair, reasoned, and efficient manner possible. GAO reviewed (1) when and how ICE officers and attorneys exercise discretion and what internal controls ICE has designed to (2) guide decision making and (3) oversee and monitor officers' decisions. To conduct this work, GAO reviewed ICE manuals, memorandums, and removal data, interviewed ICE officials, and visited 21 of 75 ICE field offices.

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## Topics

Homeland Security

Immigration statusBorder securityDecision makingDeportationImmigration enforcementImmigrantsImmigration and naturalization lawInternal controlsLaw enforcementPolicy evaluationReporting requirementsStandardsVoluntary complianceProgram implementation