An adviser to Vice President Mike Pence told House impeachment investigators this month that President Trump’s request for Ukraine President Volodymyr Zelensky to open an investigation into former Vice President Joe Biden and his family “struck me as unusual and inappropriate” and “shed some light on possible other motivations behind a security assistance hold.”

The three House committees overseeing the impeachment inquiry against Trump released hundreds of pages of closed-door testimony by Jennifer Williams, a special adviser to Pence on Europe and Russia, and Tim Morrison, the former senior director for European affairs at the National Security Council. Morrison was interviewed Oct. 31 and Williams was interviewed Nov. 7.

Both Williams and Morrison were listening in on the July 25 phone call, which was flagged by an intelligence committee whistleblower and has become the center of the impeachment inquiry. House Democrats say that aid was withheld from Ukraine until its government launched investigations into Biden, his son Hunter and their dealings in the eastern European county — particularly the younger Biden’s work with Ukrainian natural gas company Burisma Holdings.

Investigators also met Saturday with Office of Management and Budget (OMB) official Mark Sandy, who was involved in key meetings about the nearly $400 million aid package Congress had approved for Ukraine.

You can read the full testimony of Jennifer Williams here.

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