Cipollone and his attorneys are discussing a grand jury appearance, including how to handle issues of executive privilege, the source said.
ABC News was the first to report the subpoena.
Cipollone testified in a closed-door hearing last month House Select Committee Investigating 2021 January 6 attack on the US Capitol building. In the seventh public hearing, the House Committee played clips of Cipollone’s testimony where he agreed with other Trump officials that there was insufficient evidence of election fraud and said he believed Trump should have conceded the election.
Last month, the Justice Department brought in two of former Vice President Mike Pence’s top aides, Marc Short and Greg Jacob. before a federal grand jury.
These actions indicate that the Justice Department has opened an investigation entered the White House of former President Donald Trump and that investigators are looking into conduct directly related to Trump and his closest allies’ efforts to reverse his election loss.
This story has been updated with additional background information.