Vote set on Trump impeachment charges for Friday

Democrats set a vote on impeachment charges against President Donald Trump for Friday after a frequently caustic 14-hour debate with Republicans over the US leader's alleged misconduct in seeking political support from Ukraine.

In a shock late-night end to a marathon hearing of the House Judiciary Committee on Thursday, Chairman Jerry Nadler abruptly postponed a final vote on the two articles of impeachment, saying he wanted to give committee members time to "search their conscience" over the evidence presented against the US leader.

Surprised Republicans bitterly accused Nadler of running a "kangaroo court," but Democrat Jamie Raskin said they did not want to be accused of taking such a momentous action against the president in the dead of night.

"We wanted to do it in broad daylight so everybody can see exactly what's going on," he told CNN after the debate.

The move came after 14 hours of argument broadcast live which served to underscore the deep political divide of the country.

Republicans sought one after another to shoot down allegations that Trump violated his oath of office in pressuring Ukraine to help him against his Democratic rivals, particularly former vice president Joe Biden, who could face Trump in next year's presidential election.

They accused Democrats of failing to produce evidence and of acting on strictly political motives and "hate" for Trump. And they sought to turn the debate into a hearing on Biden's son, who had served on the board of a Ukraine energy company.

"You can't beat him in an election, you're not going to beat him in a reelection, so now you have set up impeachment," said Republican Congressman Andy Biggs.

"At the end of the day, you don't have the facts for your case," declared Guy Reschenthaler.

But Democrats each time returned the focus to Trump's own behavior and a large body of testimony which they said proved he gravely violated the US Constitution and continues to threaten the integrity of the 2020 elections.

"There is plenty of evidence of the president's wrongdoing," said Democratic Representative Mary Gay Scanlon.

"I don't know what more you can ask for here. You've got admissions from the president, you've got corroboration from people he's appointed. The only thing you can do is stick your head in the sand if you are not willing to see what has happened here," she said.

"By abusing his power, he endangered our elections and our national security. He remains an ongoing threat on both. ...he's threatening to do it again."