By MARY CLARE JALONICK, FARNOUSH AMIRI and MICHAEL BALSAMO WASHINGTON (AP) — The House panel investigating the Capitol insurrection will hear testimony Tuesday from Cassidy Hutchinson, a top aide in Donald Trump’s White House who is a vital witness in the sweeping investigation into the Jan. 6, 2021, attack, a person familiar with the matter told The Associated Press. The 25-year-old, who was a special assistant and aide to former Trump chief of staff Mark Meadows, has already provided a trove of information to congressional investigators and sat for multiple interviews behind closed doors. Her appearance has been cloaked in extraordinary secrecy and has raised expectations for new revelations in the nearly yearlong investigation.