CNN Exclusive: Top Pence aide cooperating with January 6 committee

Marc Short, the former chief of staff to Vice President Mike Pence, is cooperating with the January 6 committee, a significant development that will give investigators insight from one of the highest-ranking Trump officials, according to three sources with knowledge of the committee's activities.

CNN is also reporting for the first time that the committee subpoenaed Short a few weeks ago.

Short remains one of Pence's closest advisers and is a firsthand witness to many critical events the committee is examining, including what happened to Pence at the Capitol on January 6 and how former President Donald Trump pressured the former vice president not to certify the presidential election that day.