09/28/2010 07:54 pm ET Updated May 25, 2011

Mexico's Illegal Immigrants Hail Mostly From U.S.

GUADALAJARA, Mexico -- It may be the dream of some college seniors to spend a year post-graduation working "under the table" serving pints in some glorious European city. But thousands of American adults living on the lam in Mexico? As in the United States, estimates of the number of illegal immigrants in Mexico are hard to come by. But the majority are ex-pats from the U.S., according to Mexico's federal bureau of immigration.

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