Special Counsel Robert Mueller sent a subpoena to a grand jury witness last month asking for all communication related to 10 key members of the Trump campaign and administration.
According to the subpoena ... investigators want emails, text messages, work papers, telephone logs and other documents going back to Nov. 1, 2015, 4½ months after Trump launched his campaign.
The witness shared details of the subpoena on condition of anonymity.
Mueller is subpoenaing all communications — meaning emails, texts, handwritten notes, etc. — that this witness sent and received regarding the following people:
Corey Lewandowski
NBC News points out that "[o]nce Hicks' resignation takes effect in the next few weeks, Cohen will be the only person listed in the subpoena who hasn't left the employment of Trump or of the White House."
Special counsel wants documents from Trump, numerous campaign associates (NBC News)
Scoop: Mueller's hit list (Axios)