Who cares? The people who make jokes are going to continue doing it no matter what he does. That's no reason that Michael Jackson's own fans should be apprehensive about him meeting the President. And seriously, negativity about him taking part in a major public meeting is ridiculous. At that point, you might as well admit to yourself that the accusers and Sneddon won. Is being associated with Michael Jackson really that much of a slight that the President would stay away from him for reputation purposes? When his wife is talking about her kids being fans and when they're playing MJ's music at conventions, it's incredibly irritating that some fans are implying "oh Obama wouldn't want any part of that because then people will say he supports pedophiles."
People are going to make jokes when he releases a new album and is back in the media too. Guess he shouldn't do that either.