NEW YORK, NY - OCTOBER 19: Marc Mezvinsky and Chelsea Clinton attend The Headstrong Project's 3rd Annual Words of War Event at One World Trade Center on October 19, 2015 in New York City. (Photo by Cindy Ord/Getty Images for The Headstrong Project)

NEW YORK, NY - OCTOBER 19:  Marc Mezvinsky and Chelsea Clinton attend The Headstrong Project's 3rd Annual Words of War Event at One World Trade Center on October 19, 2015 in New York City.  (Photo by Cindy Ord/Getty Images for The Headstrong Project)