“When you start suing cartoonists, you look like a complete twit.”

I think it's worse than that - although it's pretty bad to have a twit for a president. An insecure despot could not allow a court jester to poke fun at his Sire, but the wise leader of a healthy kingdom (or democracy) should seek astute and witty criticism as a barometer of his rule, and to help him remember that he's only human.