AdvertisementWho is Cassidy Hutchinson, the surprise witness at Tuesday's Jan. 6 panel hearing?June 28, 2022Ximena BustillofacebookEmailCassidy Hutchinson, a top former aide to Trump White House Chief of Staff Mark Meadows, is seen in a video of her interview with the House select committee investigating the Jan. 6 attack on the U.S. Capitol on June 23. (AP)