Another White House official jokingly called the change "The Vindman Rule," after Lt. Col. Alexander Vindman, the National Security Council's director on Ukraine. He found the call so concerning that he reported it to National Security Council lawyers. Despite speaking out against Trump, he continues to work on Ukraine matters at the White House. Another person familiar with the matter said the transcripts are still being vetted and reviewed by several layers of National Security Council officials. Many career officials detailed to the National Security Council from various departments and agencies will not be replaced when their assignments are up.

Source: CNN December 13, 2019 18:20 UTC