Douglas Massey is a professor of sociology at Princeton University.
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Today’s U.S.-Mexico 'Border Crisis' in Six Charts
All data indicate that undocumented migration from Mexico, in particular, has ended and at this point more unauthorized Mexicans are leaving the country than entering it. According to estimates from the Pew Hispanic Center, the Center for Migration Studies and the Department of Homeland Security, the undocumented Mexican population stopped growing in 2008 and has been trending downward ever since.