The New York Post issued an apology for this cartoon today in order to assuage critics who claim the image is racist and a personal insult aimed at President Barak Obama.
Judge for yourself, but I read the cartoon to say, "a crazy chimpanzee must have written the stimulus, it's such a pile of garbage" rather than, "Obama is black and therefore looks like a monkey, just like all black people". I don't think that cartoon has anything to do with Obama at all; anybody who does is just looking for a reason to play the racism card.
But if the creator (and by extention the Post) did intend to portray a sitting president as a chimp, they should apologize, as that's just wrong. Also wrong: portraying a sitting president as being murdered or publicly calling for him to be murdered.