No, that's wrong. Maher is taking issue with a politician which has a very long tradition in US politics.

Just take a look at how nasty some of the things said about people like John Adams, Abraham Lincoln, Richard Nixon, and many others have been. Remember the stain on the blue dress? Or, was it a red dress.

Maher can say whatever he likes as long as it does not actually go to a factual matter and is also wrong and done with malice.

I am not a fan of Maher. Never have watched an entire show of his unless relatives from say Massachusetts are visiting.

I have read some of Ann Coulter's books though.