Jonathan Last, "What to Expect When No One's Expecting"

Jonathan Last, author of "What to Expect When No One's Expecting: America's Coming Demographic Disaster," discusses the population implosion in the U.S. and it's impact on the economy, culture and politics. He argues that if the U.S. want to continue to be a world leader, Americans must have more children. He discusses the country's demographic changes with Pew Research Center's D'Vera Cohn.