In case you had a shred of respect left for McCain...

maybe this will cure you.

Arizona Sen. John McCain made the dubious claim Friday that Sept. 11 hijackers entered the United States through Canada — just days after Homeland Security Secretary Janet Napolitano, the former governor of Arizona, said the same thing.

Napolitano retracted her claim on Thursday after Canadian officials chided her for the remark, calling it an unfortunate misconception. Napolitano admitted Thursday that she made a mistake — since the 9/11 Commission concluded that the hijackers entered the U.S. from overseas.

But when asked about the gaffe on FOX News Friday, McCain said: “Well, some of the 9/11 hijackers did come through Canada, as you know.”