<<I was talking about the satire of her physical features - her lips and teeth. Making fun of her appearance.>>
It's called caricature, Ami. Most cartoonists have to use to it, since they're not portrait artists and they have to make their subjects recognizable to their audience, preferably without having to resort to text-labelling, which would reflect negatively on their cartooning skills.
It's presumed the cartoon has some message other than the caricature of the subject's appearance, and in a political cartoon, the message is often political. For example, the message of the Condi cartoon was that Condi was insanely sycophantic and her boss treated her with the utter infantilization that one usually reserves for, well, infants. Not an ideal Secretary of State, not an ideal President, not an ideal relationship. Nothing good for the country. The message of the Rosie cartoon was that Rosie is fat, ugly, gluttonous and inhuman. Nothing political. Pure, vicious character assassination, based on nothing more than her supposed appearance. Ugly, misogynous, vile fascist garbage, which probably explains the appeal it has for you and sirs.