Washington (CNN) President Donald Trump has canceled his New Year's plans in order to remain in Washington until a deal over border wall funds is reached and the partial government shutdown ends, according to the President's incoming acting chief of staff.

"The President's been here, by the way, all weekend, all Christmas," Office of Management and Budget Director Mick Mulvaney, who will also assume the role of acting chief of staff at the end of the year, said in an interview Friday on "Fox & Friends." "He's staying in Washington, DC, over New Year's. He's canceled his plans for Christmas. Now, he's canceled his plans for New Year's."

Trump had told people he was looking forward to the annual New Year's Eve gala held at his Florida estate, Mar-a-Lago, which he almost never misses, according to people familiar with the event. It is one of his opportunities to see and speak with Mar-a-Lago friends that he otherwise doesn't see.

Mulvaney said the President is "very heavily engaged on (the shutdown negotiations) on a minute-by-minute basis."

The House and Senate adjourned Thursday after brief pro forma sessions and made plans to reconvene Monday, signaling that the partial shutdown will last through the new year. The President had intended to spend 16 days at Mar-a-Lago, including for Christmas, but canceled his plans to stay in Washington over the holiday.

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