'Took on the tough battles, hardest fights, most difficult choices': Trump bids farewell

US President Donald Trump, in a farewell address released on Tuesday, urged prayers for the new administration of President-elect Joe Biden but declined to acknowledge his Democratic successor by name.

"This week, we inaugurate a new administration and pray for its success in keeping America safe and prosperous," the Republican president said in the video remarks. "We extend our best wishes, and we also want them to have luck - a very important word."

Trump has refused to offer a full concession to Biden, who won the Nov. 3 election with 306 Electoral College votes to Trump's 232. The outgoing president is not meeting with Biden before the Democrat's inauguration at 12:00 p.m.