Overstay Enforcement: Additional Mechanisms for Collecting, Assessing, and Sharing Data Could Strengthen DHS's Efforts but Would Have Costs

摘要

According to Pew Hispanic Center estimates, approximately 4 million to 5.5 million unauthorized immigrants in the United States entered the country legally on a temporary basis but then overstayed their authorized periods of admission--referred to as overstays. As requested, GAO examined the extent to which the Department of Homeland Security (DHS) (1) takes action to address overstays and its reported results; and (2) identifies overstays and shares this information among its border security and immigration enforcement components. GAO reviewed relevant documents, such as standard operating procedures, DHS guidance, and overstay investigations data from fiscal years 2006 through 2010; interviewed officials from DHS components; and visited 6 DHS field offices and 12 ports of entry based on geographic dispersion, among other factors. The results of these visits are not generalizable, but provided insights into DHS operations.