White House responds to Wanda Sykes

During Monday's press briefing,  Robert Gibbs responded to Wanda Sykes' 9/11 joke at the White House Correspondents' Dinner.  Gibbs was asked what the president thought of the joke and responded, "There are a lot of topics that are better left for serious reflection rather than comedy. I think there's no doubt 9/11 is part of that.”