Cassidy Hutchinson, who filled in as a senior helper to Trump White House

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White House head of staff Mark Meadows

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Tuesday at a somewhat late hearing planned by the Jan. 6 panel, three sources tell NBC News.

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In recorded declaration introduced last week

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Hutchinson let examiners know that a gathering of GOP legislators had looked for official exculpations

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The revolt at the Capitol, including Reps. Matt Gaetz of Florida and Mo Brooks of Alabama.

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Hutchinson and her lawyer didn't answer a solicitation for input Monday.

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The panel unexpectedly announced Monday that it would hold a hearing

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Tuesday to present new evidence and hear witness testimony

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But did not specify who would be offering testimony like it did for previous hearings.

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