If you don’t have a sense of humor, people will think you’re a leftist. From the excerpt, she’s making fun of Kiefer Sutherland.
She might be making fun of Kiefer, but Warner is expressing her own opinion when she writes of “Laura Bush’s increasingly beleaguered late-term demeanor. (Has anyone but me noticed her astounding resemblance to Dolores Umbridge in “Harry Potter and the Order of the Phoenix”?)”