Democrats say diplomat offered corroborating information in Trump impeachment probe

A senior U.S. diplomat on Saturday told lawmakers leading an impeachment inquiry that he did not know whether U.S. President Donald Trump had withheld aid for Ukraine in an attempt force an investigation of a political rival, sources said, even as Democrats said his testimony corroborated other evidence gathered.

Philip Reeker, the acting assistant secretary of state for European and Eurasian affairs, spent about eight hours with the U.S. House of Representatives foreign affairs, intelligence and oversight committees behind closed doors at the U.S. Capitol.

Reeker told lawmakers he was unaware of whether U.S. security aid to Ukraine was withheld to pressure Kyiv to launch investigations that could have helped Trump's 2020 re-election bid, according to a source familiar with the matter.

At the end of Saturday's session, intelligence committee chairman Adam Schiff told reporters"we're making rapid progress" in the impeachment inquiry. He declined to say when the panels might advance to the next phase of hearings open to the public.

The Democratic-led panels are conducting an inquiry focusing on Trump's request that Ukrainian President Volodymyr Zelensky investigate former U.S. Vice President Joe Biden, a leading Democratic presidential candidate, and his son Hunter Biden, who had served on the board of a Ukrainian gas company.

U.S. election law prohibits candidates from accepting foreign help in an election.

As part of their probe, the lawmakers are examining whether Trump withheld $391 million US in security assistance until Zelensky publicly committed to both an investigation of the Bidens and a debunked conspiracy theory that Ukraine not Russia meddled in the U.S. 2016 presidential election.

Democrats emerging from the session said Reeker's deposition corroborated previous testimony taken by the panels,but they offered no details and it was not clear what Reeker may have corroborated.

Rep. Stephen Lynch told reporters that Reeker, whose portfolio includes Ukraine and Russia, was a "much richer reservoir of information than we originally expected."

'No earth-shattering revelations,' Republican says

But Reeker, according to the source who asked not to be identified, was largely out of the loop on policy toward Ukraine, leaving it to Kurt Volker, then the U.S. special representative for Ukraine negotiations, and others.

"There's no earth-shattering revelations. Nothing is new," Republican Rep. Scott Perry said after several hours of testimony. "The accusations that are being levelled against the president aren't being corroborated in any of this witness testimony and today in my opinion is no different."

Reeker submitted to questioning in response to a congressional subpoena that was issued after the State Department attempted to block his testimony, according to an official working on the impeachment inquiry.

The testimony was the first since a federal judge on Friday rejected a claim by Trump and his Republican allies that the Democrats' impeachment inquiry process was illegitimate because the full House had not voted to authorize it.

U.S. House Speaker Nancy Pelosi on Sept. 24 launched the formal Trump probe under her broad powers as speaker.

The White House, citing the lack of an authorizing vote, had claimed the inquiry was "constitutionally invalid" and defied numerous congressional subpoenas for documents and testimony.

At the heart of the inquiry is a July 25 phone call in which Trump asked Zelensky to investigate the Bidens and a claim debunked as a conspiracy theory that a Democratic National Committee computer server was in Ukraine.

William Taylor, the top U.S. diplomat in Ukraine, testified on Tuesday that Trump made the withheld aid contingent on Zelensky announcing the requested investigations.

Growing list of current, former officials

Reeker was unaware in the June-August period of the possibility Trump may have withheld the aid or a meeting to pressure Zelensky, the source said.

Trump denies wrongdoing and, backed by his fellow Republicans in Congress, insists he is being treated unfairly.

Reeker, 54, a career diplomat, was the latest in a growing list of current and former officials who have met with investigators.

Charles Kupperman, a former deputy national security adviser to Trump, who was called to appear on Monday, has asked a court whether he should to comply with a congressional subpoena or honour the administration's instruction not to testify.

On Tuesday, lawmakers expect to hear from Alexander Vindman, the White House National Security Council's top Ukraine expert.

Kathryn Wheelbarger, acting assistant secretary of defense for international security, is scheduled to appear on Wednesday, and Tim Morrison, a top White House adviser on Russia and Europe, is scheduled for Thursday.