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Harris is the deputy director of Oval Office operations at the White House, according to her page on the CFAs website.
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She was a White House intern in late 2019 before starting as an assistant in the Trump White Houses Office of Administration in 2020, according to the page. She became the receptionist of the United States in September 2020 and continued working for Trump as an executive assistant when he left office in early 2021.
According to the CFAs page on Harris, she managed Trumps Presidential Portrait Project in conjunction with the National Portrait Gallery of the Smithsonian Institution and the White House Historical Association.
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White House communications director Steven Cheung told the Post that Harris understands the presidents vision and appreciation of the arts like very few others when asked about her qualifications to serve on the CFA.
But former members of the panel told the newspaper that she appears to have less previous arts experience than anyone in the panels history.
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https://www.newsweek.com/chamberlain-harris-trump-picks-aide-for-ballroom-construction-panel-11540573