President Obama, flanked by Michael Clemente (left), executive vice president of Fox News, and White House Correspondents' Association President Ed Henry (right), chief White House correspondent for Fox News, waves to the audience after speaking at the White House Correspondents' Association Dinner at the Washington Hilton Hotel on Saturday, April 27, 2013, in Washington. (AP Photo/Carolyn Kaster)
President Obama (left) and White House Correspondents' Association President Ed Henry (center), chief White House correspondent for Fox News, laugh as late-night television host and comedian Conan O'Brien speaks during the White House Correspondents' Association Dinner at the Washington Hilton Hotel on Saturday, April 27, 2013, in Washington. (AP Photo/Carolyn Kaster)
Seth Meyers (left) reportedly ditched a series of jokes about the 2012 Republican presidential field during last year's White House Correspondents' Association dinner after he realized President Obama wasn't laughing. (Associated Press)
Comedian Rich Little said the White House Correspondents' Association dinner was "probably the hardest show I've done in my entire career." (Associated Press)
**FILE** President George W. Bush (left) and Steve Bridges, a comedian and President Bush impersonator, gesture April 29, 2006, during the White House Correspondents' Association's 92nd annual awards dinner in Washington. (Associated Press)