Good find by Matthew Delong of the Washington Independent, who went back through the files and discovered that John McCain was for pork before he was against it.
Delong unearthed a news article, headlined "McCain attacks pork projects, then finds he backed 3 in state," and a blistering editorial that tell the story.
Granted it's 17 years ago. But he does say he's never requested pork. Lie number 739.