- President Barack Obama made light of the serious -- a Secret Service scandal and lavish spending at a government conference -- and the inconsequential -- the graying of his hair -- at the annual White House Correspondents' Association Dinner on Saturday night.

And he even made time for business tycoon Donald Trump, whom Obama kidded at last year's dinner about pushing the president to release his long-form birth certificate.

"We gather during a historic anniversary. This weekend last year, we finally delivered justice to one of the world's most notorious individuals," Obama said to a packed ballroom at the Washington Hilton.

A photo of Trump was shown, rather than that of slain al Qaeda leader Osama bin Laden.

"Four years ago, I was in a brutal primary battle with Hillary Clinton," Obama said. "Four years later, she won't stop drunk texting me from Cartagena,