Source Pew Research Center tabulations of Census data
ANNE R CAREY AND PAUL TRAP, USA TODAY"
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Susan Page, Carter: Snowden Good for USA; Americans should know about NSA, ex-president says. USA Today, Mar 25, 2014
("Former president Jimmy Carter defended the disclosures by fugitive NSA contractor Edward Snowden on Monday, saying revelations that the US intelligence agencies were collecting meta-data of Americans' phone calls and e-mails have been 'probably constructive in the long run.' Carter, 89, was interviewed on USA Today's capital download about his new book, A call to Actions: Women, Religion, Violence, and Power, being published today")