Who is Cassidy Hutchinson?

WASHINGTON (NewsNation) — In a single afternoon, 25-year-old Cassidy Hutchinson went from a former White House staffer to a high-profile witness in the government’s probe into the Jan. 6 insurrection at the Capitol.
Hutchinson gave two hours of testimony on national television that cast former President Donald Trump as enraged by efforts to keep his armed supporters from attending his speech…