This is from the Steve Wynn quote that Sea Parrot posted, but it's also why we don't laugh more. People are scared of Obama and scared of the government, and they know that it's not permitted to make jokes about the Great Leader, who has a notoriously thin skin and looks for offense in anything. It's the same reason nobody makes jokes about Islam, I guess. Fear.
That’s the exact opposite of what needs to be done. Obama needs to be mocked always and everywhere all the time.