US President-elect Donald Trump spent Christmas day firing off on his Truth Social website about his own perceived political persecution -- from doubling down on his threats to take control of the Panama Canal to making Canada the 51st state of US.

The outgoing and incoming U.S. presidents had different messages for the Christmas holiday on Wednesday, with Democrat Joe Biden urging Americans to reflect and unite, while Republican Donald Trump offered a holiday greeting and then took aim at his political opponents.

President-elect Trump and President Biden bid Americans a merry Christmas as the nation nears a change in presidential administrations.

The outgoing and incoming presidents shared messages with the country on Christmas morning as President Joe Biden is marking his final celebration as an occupant of the White House. President-elect Donald Trump shared a video montage of messages he sent out when he was president and several posts referencing goals for his next administration.

President-elect Donald Trump won't be sworn into to the White House until Jan. 20, but he had an important message to share with the rest of the world on Christmas Day. Trump, 78, shared a video of him and Melania talking about the true meaning of Christmas.