Analysis of data collected by Census Bureau in 2002 shows that women from the top-10 immigrant- sending countries living in the United States collectively tend to have higher fertility than women in their home countries. As a group, immigrants from these countries have 23 percent more children than women in their home countries, adding to world population growth. Among the findings: In 2002, immigrant women (legal and illegal) from the top-10 immigrant-sending countries had 2.9 children on average, compared to a fertility rate of 2.3 children in their home countries — a 23-percent difference. Among Mexican immigrants in the United...