Figure 4. Border Apprehensions as a Function of US Labor Demand, 1991 to 2008
Note: De-trended employment shifted six months. Apprehensions data correspond to the month indicated; employment data correspond to six months after the month indicated.
Source: Courtesy of Pia Orrenius, Federal Reserve Bank of Dallas. Data from: US Department of Labor, Bureau of Labor Statistics; US Department of Homeland Security, Office of Immigration Statistics.

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