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staBy Vaughn Hillyard, Hallie Jackson, Kristen Welker, Geoff Bennett and Carol E. Lee

WASHINGTON — President Donald Trump appears poised to replace current chief of staff John Kelly, the 68 year-old, four-star marine general, with a 36-year old multi-millionaire who has a reputation as a polarizing and hard-charging fixture in Republican politics, multiple officials tell NBC News.

Nick Ayers, who has served in the administration as the chief of staff to Vice President Mike Pence for the last 17 months, has agreed to serve as acting chief of staff to President Trump, a senior White House official tells NBC News. ff