White House Correspondents' Dinner 2013 (34 images)

President Barack Obama reacts to a joke told by comedian Conan O'Brien during the White House Correspondents' Association (WHCA) in Washington, DC on April 27, 2013. UPI/Pete Marovich/Pool

President Barack Obama acknowledges the audience following his comedic address during the White House Correspondents' Association (WHCA) in Washington, DC on April 27, 2013. UPI/Pete Marovich/Pool

Commentator Bill Reilly talks with Supreme Court Justice Antonin Scalia during the White House Correspondents' Association (WHCA) in Washington, DC on April 27, 2013. UPI/Pete Marovich/Pool

First Lady Michelle Obama reacts to a joke told by comedian Conan O'Brien during the White House Correspondents' Association (WHCA) in Washington, DC on April 27, 2013. UPI/Pete Marovich/Pool