The American public overwhelmingly thinks they’re bad. In a recent New York Times/CBS News poll, 74 percent of respondents said illegal immigrants weakened the economy, compared to only 17 percent who said they strengthened it. Yet the consensus among most economists is that immigration, both legal and illegal, provides a small net boost to the economy. Immigrants provide cheap labor, lower the prices of everything from produce to new homes, and leave consumers with a little more money in their pockets.