WEST HOLLYWOOD, CA - OCTOBER 29: Master of Ceremonies Billy Bush speaks onstage during the imagine1day Visionary Leadership Dinner at The London West Hollywood on October 29, 2015 in West Hollywood, California. (Photo by Rachel Murray/Getty Images for imagine1day)
"Of course he said it," wrote Bush, who was heard laughing and egging on Trump in the hot-mic audio that surfaced during the 2016 election. "And we laughed along, without a single doubt that this was hypothetical hot air from America's highest-rated bloviator."
Bush said he and the seven other witnesses on the bus during the recording assumed Trump was just performing.
Bush, who was fired from his job as a "Today" host last year in wake of the controversy, said he believes the women who accused Trump of sexual misconduct after the tape surfaced.
"To these women: I will never know the fear you felt or the frustration of being summarily dismissed and called a liar, but I do know a lot about the anguish of being inexorably linked to Donald Trump," Bush wrote. "You have my respect and admiration. You are culture warriors at the forefront of necessary change."
The editorial came amid reports that Trump is now privately questioning the tape's authenticity, even though he previously apologized for his comments.
"President Trump is currently indulging in some revisionist history, reportedly telling allies, including at least one United States senator, that the voice on the tape is not his," Bush wrote. "This has hit a raw nerve in me."