In a heated, “unhinged” dispute, Donald Trump fought objections from his White House lawyers to a plan, eventually discarded, to seize states’ voting machines and then, in a last ditch effort to salvage his presidency, summoned supporters to march on the U.S. Capitol for what turned into the deadly riot, the House Jan 6 committee revealed Tuesday.

In another disclosure, raising the question of witness tampering, the panel’s vice-chair said Trump himself had tried to contact a person who was talking to the committee about potential testimony. And still other new information revealed that Trump was so intent on a Capitol confrontation that his aides secretly planned for a second rally stage there the day of the attack.