Actually the DC major made a request to DoD yesterday to deploy the national guard, and Trump wouldn't approve it.
So he called tens of thousands of angry people to the Capitol, intentionally left the Capitol grossly under protected, then held a rally for a "Save America" march where he repeatedly told them that their country was being stolen from them/ he was never going to give up/etc and where Giuliani literally told them today would be "trial by combat", then encouraged a bunch of people who included several armed extremist militias to head to the capitol, and told them that the proceedings there were their last chance to save his Presidency and keep the country from falling into chaos.
He orchestrated every damn part of this.