WASHINGTON — Former Biden White House press secretary Karine Jean-Pierre, who vociferously defended her boss against accusations of diminished mental acuity , arrived Friday on Capitol Hill to answer questions about the purported cover-up of the 46th president’s cognitive decline .

Jean-Pierre — who has since departed the Democratic Party and is writing a tell-all book about the “broken” administration she served — was hauled in for testimony before the House Oversight Committee.

“We intentionally wanted Jean-Pierre to be one of the last people we bring in,” Oversight Committee Chairman James Comer (R-Ky.) told reporters . “We believe that she’s written some things in the book that are gonna be of interest to our entire investigation.” 5

The Republican also said he planned

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