本文作者： 21ST
AMERICAN political cartoonists spent the last eight years having a great time making fun of George W. Bush. But ever since Barack Obama moved into the White House, they've been struggling to come up with funny material. "We're supposed to concentrate on finding things wrong. There's no point in drawing a cartoon that's favorable," popular Pulitzer Prize-winning cartoonist Pat Oliphant told Politico.com.