10% of Mexico's population lives in the US and 15% of Mexico's labor force works in the US

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The current migration of Mexicans and Central Americans to the United States is one of the largest diasporas in modern history, experts say.

Roughly 10 percent of Mexico's population of about 107 million is now living in the United States, estimates show. About 15 percent of Mexico's labor force is working in the United States. One in every 7 Mexican workers migrates to the United States.

Mass migration from Mexico began more than a century ago. It is deeply embedded in the history, culture and economies of both nations. The current wave began with Mexico's economic crisis in 1982, accelerated sharply in the 1990s with the U.S. economic boom, and today has reached record dimensions.

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"We want Mexico to look like Canada," said Stephen Haber, director of Stanford University's Social Science History Institute and a Latin America specialist at the Hoover Institution. "That's the optimal for the United States. We never talk about instability in Canada. We're never concerned about a Canadian security problem. Because Canada is wealthy and stable. It's so wealthy and stable we barely know it's there most of the time. That's the optimal for Mexico: a wealthy and stable country."

What isn't wanted, Haber said, "is an unstable country on your border, especially an unstable country that hates you."

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Migration is profoundly altering Mexico and Central America. Entire rural communities are nearly bereft of working-age men. The town of Tendeparacua, in the Mexican state of Michoacan, had 6,000 residents in 1985, and now has 600, according to news reports. In five Mexican states, the money migrants send home exceeds locally generated income, one study found.

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The money Mexican migrants send home almost equals the U.S. foreign aid budget for the entire world, said Arturo Valenzuela, director of the Center for Latin American Studies at Georgetown University and former head of Inter-American Affairs at the National Security Council during the Clinton administration.

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Mexico is aging too, which will eventually cause migration to ebb. Its population trails the U.S. age profile by 30 years. By then, demographers expect Mexico may be importing labor.

http://www.sfgate.com/cgi-bin/article.cgi?...MNGFQIVNAF1.DTL