Former aides to Joe Biden reacted with rage Wednesday to an excerpt from Kamala Harris' upcoming book in which she said the ex-president was "reckless" to run again and accused Biden's team of sabotaging her during her vice presidency.

Why it matters: The Biden and Harris camps publicly have claimed they were united through the four years of Biden's presidency, but now Harris is trying to distance herself from him — after not doing so during her short run for president. • The release of the excerpt from her book, "107 Days" — due out Sept. 23 — has exposed years of hurt feelings and frustrations. • "Vice President Harris was simply not good at the job," said one former Biden White House official. "She had basically zero substantive role in any of the administration's key work streams,

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