The "America" immigration restrictionists were defending no longer exists.
For the first time, minorities make up a majority of babies in the U.S., part of a sweeping race change and growing age divide between mostly white, older Americans and predominantly minority youths that could reshape government policies.
Preliminary census estimates also show the share of African-American households headed by women - made up of mostly single mothers - now exceeds African-American households with married couples, a sign of declining U.S. marriages overall but also continuing challenges for black youths without involved fathers.
The findings, based on the latest government data, offer a preview of final 2010 census results being released this summer that provide detailed breakdowns by age, race and householder relationships such as same-sex couples.
Demographers say the numbers provide the clearest confirmation yet of a changing social order, one in which racial and ethnic minorities will become the U.S. majority by midcentury.
"We're moving toward an acknowledgment that we're living in a different world than the 1950s, where married or two-parent heterosexual couples are now no longer the norm for a lot of kids, especially kids of color," said Laura Speer, coordinator of the Kids Count project for the Baltimore-based Annie E. Casey Foundation.