The lead lawyer for the National Security Council is expected to defy a subpoena to appear before House impeachment investigators, following President Donald Trump's orders not to cooperate with the probe.
John Eisenberg is one of four White House witnesses scheduled for depositions Monday.
None of the four is expected to appear, according to a person familiar with the matter who requested anonymity to discuss the confidential interviews.
Eisenberg was instrumental in discussions about how to handle a White House memo recounting the Trump phone call with Ukraine that is central to the impeachment inquiry.
The other witnesses scheduled to testify on Monday are White House aide Robert Blair, National Security Council aide Michael Ellis and Office of Management and Budget aide Brian McCormack. All four have been subpoenaed.