On this episode of Numbers Geek, we put the adjectives and arguments aside and explore the long-term U.S. immigration numbers and trends, including the implications for the population and economy. Featuring Steve Ballmer, the former Microsoft CEO and the founder of USAFacts, GeekWire's partner on the Numbers Geek podcast. See geekwire.com/numbersgeek and usafacts.org for more.

Finale: Most Important Numbers in the World
35:13

A picture of America in numbers
33:02

What Happened to the Middle Class?
22:48