The U.S. Census may be the most consequential data set in America. It determines how political representation is apportioned in Washington and how trillions of dollars in federal funding are allocated. But the data contained in the Census shouldn't always be taken at face value. Galen Druke speaks with historian Dan Bouk about his book, "Democracy's Data: The Hidden Stories in the U.S. Census and how to Read Them." Learn more about your ad choices. Visit megaphone.fm/adchoices