statistics of immigrants entering the United States Of all unauthorized immigrants living in the United States in 2009, 63 percent entered before 2000, and 62 percent were from Mexico U.S. Department of Homeland Security, estimates of the unauthorized immigrant population residing in the United States: January 2009, DHSGov, January 2010.
the statistics of immigrants entering the united states Of all unauthorized immigrants living in the united states in 2009, 63 percent entered before 2000, and 62 percent were from mexico us department of homeland security ,  estimates of the unauthorized immigrant population residing in the united states: january 2009 , dhsgov, jan 2010.