Marc Short, former Vice President Mike Pence’s chief of staff, appeared before a federal grand jury investigating the Jan. 6, 2021, attack on the U.S. Capitol.
Mr. Short told ABC News on Monday that he was served a subpoena and appeared before the grand jury but cannot comment further. He is the highest-ranking official from the Trump White House known to have cooperated with the Justice Department’s probe.
Mr. Pence was on Capitol Hill during the Jan. 6 attack to certify the electoral votes and finalize President Biden’s win in the 2020 election. Pro-Trump supporters, some chanting “hang Mike Pence,” stormed the building while Mr.