That they're both entertainers who make a very good living by saying things that piss off some people.
Succinct and accurate.
I think this is something that can be said about virtually everyone who dismisses the subject. They don't know the facts, and it's glaringly obvious as soon as they present their "arguments" for "moving on." They're uncomfortable with the subject--to the degree, I believe, that even if it were proven that Obama was not born in the United States or was using a phony SSN, they would STILL not want to pursue the matter.
Shame on all of them. It's one thing to not know the facts of an issue and quite another to mock those who raise questions about an issue you know nothing about. The former is understandable, the latter is disgraceful.