Who is the Commencement speaker?

Answer: 

By tradition, Yale does not have a Commencement speaker, although an exception is made when a sitting president is awarded an honorary degree, as was the case in 2001. Class Day, which takes place the Sunday before Commencement, features a notable speaker chosen with suggestions from the Yale College senior class. Recent Class Day speakers have included U.S. Senator Cory Booker, Barbara Walters, Tom Hanks, Bill Clinton, John Kerry, Joe Biden, and Samantha Power.