A spokesperson for the select committee declined to comment about what else such a line of inquiry might involve. But a subpoena to Giuliani, the lead Trump lawyer at the Willard, is understood to be in the offing, according to a source familiar with the matter.
The Guardian reported that the night before the Capitol attack, Trump called the lawyers and non-lawyers at the Willard separately, because Giuliani did not want to have non-lawyers participate on sensitive calls and jeopardize claims to attorney-client privilege.
It was not clear whether Giulaini might invoke attorney-client privilege as a way to escape cooperating with the investigation in the event of a subpoena, but Congressman Jamie Raskin, a member of the select committee, noted the protection does not confer broad immunity.
The Guardian also reported Trump made several calls the day before the Capitol attack from both the White House residence, his preferred place to work, as well as the West Wing, but it was not certain from which location he phoned his top lieutenants at the Willard.
The distinction is significant as phone calls placed from the White House residence, even from a landline desk phone, are not automatically memorialized in records sent to the National Archives after the end of an administration.
