Why Tipping Is Everywhere

Tipping, once contained to certain corners of the economy, has exploded, creating confusion and angst. Now, it is even becoming an issue in the U.S. presidential campaign. Ben Casselman, who covers the U.S. economy for The New York Times, cracks open the mystery of this new era of tipping. Guest: Ben Casselman, a reporter covering the U.S. economy for The New York Times.