- Video report by ITV News Washington Correspondent Robert Moore
President Donald Trump was overheard asking about “the investigations” he wanted Ukraine to pursue that are central to the impeachment inquiry, a senior diplomat has said.
For the first time on Wednesday, Americans heard witnesses give evidence that Mr Trump tried to withhold military aid to Ukraine in a bid to get the country to dig for dirt on the son of his political rival Joe Biden.
In the case of Mr Trump, the impeachment inquiry could lead to a charge of misconduct made against him, and could result in him being forced from office.
However, this is unlikely to happen, since the Senate - which has a Republican majority - is not likely to vote against its party.
During Wednesday's hearing, William Taylor, the top US diplomat in Ukraine said his staff recently told him they overheard Mr Trump speaking on the phone to another diplomat, Ambassador Gordon Sondland, at a restaurant the day after Mr Trump’s July phone call with the new leader of Ukraine.
- ITV News Washington Correspondent Robert Moore says that while the impeachment inquiry is unlikely to force Donald Trump from office, it could impact him at the polls next year
The staff could hear Mr Trump on the phone asking about “the investigations,” and Mr Sondland told the president the Ukrainians were ready to move forward, Mr Taylor testified to the House Intelligence Committee - a body which has oversight of America's intelligence community.
The intelligence panel’s top Republican, Devin Nunes, countered that Mr Trump “would have a perfectly good reason for wanting to find out what happened” if there were indications that Ukraine meddled in the 2016 presidential election.
National security officials have told Congress they do not believe Ukraine meddled in the 2016 election.
The anonymous whistleblower’s complaint to the intelligence community’s inspector general — including that Mr Trump had pressed Ukraine’s president Volodymyr Zelensky to investigate Democratic foe Joe Biden and Biden’s son and was holding up US military aid — ignited the impeachment inquiry.
As Wednesday’s hearing opened, Republicans lawmakers immediately pushed Democrats to hear in closed session from the anonymous whistleblower.
Adam Schiff, the Democratic committee chairman, denied the request but said it would be considered later.
“We will do everything necessary to protect the whistleblower’s identity,” Mr Schiff said.
Mr Schiff outlined the question at the core of the impeachment inquiry – whether the president used his office to pressure Ukraine officials for personal political gain.
“The matter is as simple and as terrible as that,” Mr Schiff said. “Our answer to these questions will affect not only the future of this presidency but the future of the presidency itself, and what kind of conduct or misconduct the American people may come to expect from their commander in chief.”
It was a remarkable moment, even for a White House full of them.
The hearing is the first chance for America, and the rest of the world, to see and hear for themselves about Mr Trump’s actions toward Ukraine and consider whether they are impeachable offences.
The first witness, Deputy Assistant Secretary of State George Kent, said he never heard any US official try to shield a Ukraine company from investigations, directly contradicting a core complaint against Joe Biden being raised by allies of the White House.
Mr Kent said he raised concerns in 2015 about the then vice-president’s son, Hunter Biden, being on the board of Burisma, a Ukraine gas company.
He warned that it could give the “perception of a conflict of interest.”
But Mr Kent indicated no one from the US was protecting the company from investigations in Ukraine as Republicans have implied.
“Let me be clear; however, I did not witness any efforts by any US official to shield Burisma from scrutiny,” Mr Kent said.
The career diplomat did not go into detail about the issues central to the impeachment inquiry – Mr Trump’s conversation pressuring the Ukraine government to investigate Democrats and the Bidens – but he voiced his concerns with them.
“I do not believe the United States should ask other countries to engage in selective, politically associated investigations or prosecutions against opponents of those in power, because such selective actions undermine the rule of law regardless of the country,” he said.
Mr Nunes accused the Democratic majority of conducting a “scorched earth” effort to take down the President after the special counsel’s Russia investigation into the 2016 election failed to spark impeachment proceedings.
“We’re supposed to take these people at face value when they trot out new allegations?” said Mr Nunes, a top Trump ally.
He derided what he called the “cult-like atmosphere in the basement of the Capitol” where investigators have been interviewing witnesses behind closed doors for weeks.
Transcripts of those interviews have been released.
Mr Nunes called the Ukraine matter a “low rent” sequel to the Russia probe.
“Democrats are advancing their impeachment sham,” he said.
The proceedings were being broadcast live, and on social media, from a packed hearing room on Capitol Hill.
The country has been here only three times before, and never against the 21st century backdrop of real-time commentary, including from the Republican president himself.
Mr Trump responded by releasing a video calling the hearings the “single greatest scam in the history of American politics”.
In the video filmed in the White House Rose Garden, Mr Trump claims that Democrats want to take away his viewers’ guns, health care, freedom and votes.
He adds: “They’re trying to stop me because I’m fighting for you and I’ll never let that happen.”
At its core, the inquiry stems from Mr Trump's July 25 phone call with Mr Zelensky.
Mr Trump wanted the Ukraine government to investigate Democrats in the 2016 election and his potential 2020 rival, Joe Biden.
The anonymous whistleblower first alerted officials to concerns about the phone call.
The White House released a rough transcript of the conversation, with portions deleted.
Democratic House Speaker Nancy Pelosi was initially reluctant to launch a formal impeachment inquiry, but she pressed ahead in September after the whistleblower's complaint.