Nancy Le Tourneau at the Political Animal blog writes about the anatomy of a coverup. Yates Was Warned. Nevertheless, She Persisted:
The words that sparked the resistance movement to rally in support of Sen. Elizabeth Warren when McConnell tried to silence her now apply to Sally Yates. If you remember, she is the woman who served as the Deputy Attorney General in the Obama administration and was initially asked to stay on as the Acting Attorney General for Trump until he fired her for refusing to defend his Muslim travel ban.
Or was there another reason?
[Four days earlier], Yates warned the White House that the statements made by Michael Flynn about his contacts with the Russian Ambassador were not true and could potentially be used as blackmail against him, a warning that the White House chose to ignore until the information became public and Flynn was fired.
Yates is now eager to talk to congressional investigators about those developments.