Revisiting the Watergate scandal with new revelations

It will be 50 years this summer since Watergate, when five burglars broke into the Democratic National Committee headquarters and set off a series of investigations that led to the resignation of then-President Nixon. A new book looks at how the scandal we thought we knew was actually a series of events. Historian Garrett Graff, author of "Watergate: A New History," joins Judy Woodruff to discuss.