Guest workers would mainly legalize today's vast inflows of illegal immigrants, with the same consequence: We'd be importing poverty. This isn't because these immigrants aren't hardworking; many are. Nor is it because they don't assimilate; many do. But they generally don't go home, assimilation is slow and the ranks of the poor are constantly replenished. Since 1980 the number of Hispanics with incomes below the government's poverty line (about $19,300 in 2004 for a family of four) has risen 162 percent. Over the same period, the number of non-Hispanic whites in poverty rose 3 percent and the number of blacks, 9.5 percent. What we have now -- and would with guest workers -- is a conscious policy of creating poverty in the United States while relieving it in Mexico. By and large, this is a bad bargain for the United States. It stresses local schools, hospitals and housing; it feeds social tensions (witness the Minutemen). To be sure, some Americans get cheap housecleaning or landscaping services. But if more mowed their own lawns or did their own laundry, it wouldn't be a tragedy.

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