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Figure 1-1 Apprehensions of unauthorized immigrants, 2001-2010.

SOURCE: Data from U.S. Department of Homeland Security, 2011b:Table 35.

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Figure 1-2 U.S. Border Patrol sectors along the U.S.–Mexico border.

NOTE: The sectors are San Diego and El Centro in California; Yuma and Tucson in Arizona; and El Paso, Marfa, Del Rio, Laredo, and Rio Grande Valley in Texas.

SOURCE: U.S. Government Accountability Office, 2011b:2.



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