U.S. Unauthorized Immigration Flows Are Down Sharply Since Mid-Decade

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U.S. Unauthorized Immigration Flows Are Down Sharply Since Mid-Decade

The annual inflow of unauthorized immigrants to the United States was nearly two-thirds smaller in the March 2007 to March 2009 period than it had been from March 2000 to March 2005, according to new estimates by the Pew Hispanic Center.

This sharp decline has contributed to an overall reduction of 8% in the number of unauthorized immigrants currently living in the U.S.-to 11.1 million in March 2009 from a peak of 12 million in March 2007, according to the estimates. The decrease represents the first significant reversal in the growth of this population over the past two decades.

These new Pew Hispanic Center estimates rely on data mainly from the Census Bureau's Current Population Survey and decennial census. The unauthorized immigrant population is estimated using the widely accepted residual method, in which a demographic estimate of the legal foreign-born population is subtracted from the total foreign-born population. The difference provides the basis for estimating the size and characteristics of the unauthorized immigrant population.

Read the full report U.S. Unauthorized Immigration Flows Are Down Sharply Since Mid-Decade on the Pew Hispanic Center's Web site.

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