The former executive director of the 9/11 Commission denies explosive charges of undisclosed ties to the Bush White House or interference with the panel's report. The charges are ... contained in New York Times reporter Philip Shenon's [new] book, The Commission: The Uncensored History of the 9/11 Investigation, [and are] confirmed by the book's publisher. [When] 9/11 Commission co-chairs [Thomas] Kean and Lee Hamilton hired former Condoleezza Rice aide Philip Zelikow to be executive director, Zelikow failed to tell them ... that he was "instrumental" in demoting Richard Clarke, the onetime White House counterterrorism czar. In his book, Shenon also says that while working for the panel, Zelikow appears to have had private conversations with former White House political director Karl Rove, despite a ban on such communication. Shenon reports that Zelikow later ordered his assistant to stop keeping a log of his calls. Zelikow told ABC News he was under no prohibition that barred his conversations with Rove, and did not recall asking his assistant to stop logging his calls. Shenon directed calls to his publisher, Twelve Books, a subsidiary of Hachette Book Group. Cary Goldstein, a spokesman for Hachette, confirmed the [above] characterization of the book's contents, but said he could not confirm direct quotes. "It's not a surprise," Goldstein said when asked his reaction to the leak of the book's details before its Feb. 5 publication date. "I think people are really curious to see what the report had looked like if it hadn't been neutered in [the panel's] effort to be unanimous."