A senior adviser to Vice President Mike Pence is likely to testify to the House committees conducting an impeachment investigation into President Trump.
Jennifer Williams is expected to comply with the request to testify Thursday, according to CNN. She would be the first person on Pence’s staff to appear in front of the committees.
Williams was listening to the July 25 phone call in which Trump asked Ukrainian President Volodymyr Zelensky to investigate former Vice President Joe Biden and his son, Hunter, who sat on the board of a Ukrainian energy company.
Her testimony could shed light on how much Pence and those around him knew about Trump’s efforts to pressure Ukraine to investigate his political rival.
Williams is a longtime State Department staffer and advises Pence on European and Russian affairs. She was one of two Pence aides listening in on the call. Gen. Keith Kellogg, Pence’s national security adviser, was also on the call but has not yet been asked to testify.
Pence did not listen in on the call, but a transcript of Trump’s conversation with Zelensky was included in the vice president’s daily briefing binder, an administration source told CNN.
The vice president has insisted Trump did nothing wrong.