Demographers say this year could be the "tipping point" in the United States when the number of babies born to minorities outnumbers that of babies born to whites. The numbers are growing because immigration to the U.S. has boosted the number of Hispanic women in their prime childbearing years. Minorities made up 48 percent of U.S. children born in 2008, the latest census estimates available, compared to 37 percent in 1990.
