In the late 1990s, the black-white wage differential closed at the fastest rate since the civil rights era.

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The lack of workable legal visas and the wage differential between the U.S. and Mexico have been the primary drivers of illegal immigration.

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While it is true that college graduates do, on average, earn more over their lifetimes than those possessing only a high school degree, it has not been demonstrated convincingly that college attendance causes this wage differential.

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Today's economic crisis has little to do with differential wage costs within the euro.

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