[AuntB]

“I wonder — of the 66.1% US citizens in the chart, what fraction are US-born children of illegal aliens?”

This gives a clue:

Study: Illegal Immigrants Having More Kids In US Associated Press ^ | April 14, 2009
Growing numbers of children of illegal immigrants are being born in this country, and they are nearly twice as likely to live in poverty than those with American-born parents...
Overall, illegal immigrants’ children account for one of every 15 students in kindergarten through 12th grade. In 2008, California had the most illegal immigrants at 2.7 million, double its 1990 number, followed by Texas, Florida, New York and New Jersey.
http://www.thedenverchannel.com/money/19175382/detail.html

[chuckles]

Google “Demographic Winter”. There are several films that deal with low birth rates and their consequences. Some show the effects of illegal births and other deals with Muslim birth rates.

At the end of the movie you will be prompted to buy more ammo.