There were 3 percent fewer births in the United States in 2010 than the year before, continuing a trend that first began to emerge around 2005. People tend to have fewer children when they are under financial stress, and in this case, the lower birth rate appears to be a sign of an economy still in retreat.
The lower birth rate is not any cause for worry in itself, and could actually be seen as good news. Even including this latest report and discounting the effects of net immigration, the U.S. population is still growing at an unsustainable rate.