And previous waves of immigration raise demographic challenges as a bulge of Latinos reaches college age.

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One of the largest waves of immigration in our history took place little more than a century ago.

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Most Afro-Latinos arrived in this country by way of various waves of immigration.

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In contrast to previous waves of immigration, Asian-Americans are more skilled, better educated, and earn higher incomes, often surpassing native born Americans.

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That would affront the French republican notion that a melting-pot should produce a single stew, as, by and large, did earlier waves of immigration in the past half-century from Eastern Europe, Portugal and Italy.

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Immigration scams come in waves.

ECONOMIST: Please God, let me be an American | The