The sources told ABC News that Cipollone’s lawyers — as they did with the House select committee that investigated the Jan. 6 attack on Capitol Hill — are expected to participate in negotiations for any appearance while weighing concerns about potential executive claims. privileges. The move to subpoena Cipollone marks an even more dramatic escalation of the Justice Department’s investigation into the Jan. 6 attack than previously known, following former Vice President Mike Pence’s senior staff appearances before a grand jury two years ago. weeks. Justice Department officials declined to comment when contacted by ABC News. A representative for Cipollone could not be reached for comment. Last month, Cipollone spoke to the House select committee on Jan. 6 in a lengthy closed-door interview, portions of which were aired during two of the committee’s most recent public hearings. Cipollone spoke to the committee about a number of topics, including how then-President Donald Trump wanted to do more to quell the riots on the day of the attack and how Cabinet secretaries considered calling a meeting to discuss decision-making from Trump. in the wake of the rebellion. Pat Cipollone attends a briefing in the Rose Garden of the White House in Washington, March 29, 2020. Patrick Semansky/AP, FILE In videotaped testimony before the committee on Jan. 6, Cipollone made it clear that he wanted Trump to intervene sooner while the attack was underway. “I’ve been pretty clear that there needs to be an immediate and strong response, statement, public statement, that people need to leave the Capitol now,” Cipollone said. Committee members also asked Cipollone about discussions among Trump cabinet members about invoking the 25th Amendment to potentially remove Trump from office before the inauguration of President Joe Biden.