But McCain, appearing on "The CBS Evening News with Katie Couric" Wednesday night, challenged Obama's claims that he supported a joint statement.

CNN: Was Obama blindsided by McCain announcement?

The Union of Concerned Scientists has already issued a statement debunking the book's claims, and debate about the merits of this one idea among many will rage on in the blogosphere.

ECONOMIST: The controversy over SuperFreakonomics

The FAI statement said that the newspaper's claims in relation to a "ticket fiasco are unfounded".

BBC: FAI rejects Aviva Stadium ticket crisis reports