The committee investigating the Jan. 6 Capitol attack held its seventh public hearing Tuesday, focusing on the role right-wing extremist groups – such as the Proud Boys and the Oath Keepers – played in planning the deadly siege. It also featured testimony from Stephen Ayres, a former Ohio factory worker, who said he stormed the Capitol after President Trump suggested it because he believed Trump's claims that the election had been stolen.And: President Trump attempted to call a witness in the Jan. 6 investigation following the last hearing on June 28 with Cassidy Hutchinson, the committee said.This episode: White House correspondent Tamara Keith, congressional reporter Claudia Grisales, and justice correspondent Ryan Lucas.Support the show and unlock sponsor-free listening with a subscription to The NPR Politics Podcast Plus. Learn more at plus.npr.org/politics Connect:Email the show at nprpolitics@npr.orgJoin the NPR Politics Podcast Facebook Group.Subscribe to the NPR Politics Newsletter.