The Wall Street Journal, in its "Monthly Economic Forecasting Survey: April 2006," conducted from Apr. 7-11, 2006, obtained the following answers from 46 economists:

Illegal immigrants often benefit businesses by filling low-wage jobs that are difficult to fill with Americans. But illegal immigrants can add to the costs of U.S. social programs. On balance, has the U.S. economy benefited more than it has been harmed by its current population of undocumented workers?

96% answered it has benefited more than it has been harmed.

4% answered it has been harmed more than it has benefited.

Apr. 7-11, 2006