A congressional inquiry has heard that a Trump tweet mobilised far-right extremists to converge on Washington DC on the day of Capitol riots in 2021.
The then-president forged ahead with a rallying call to supporters even though aides repeatedly told him he had fairly lost the 2020 election to Joe Biden.
The committee accuses Trump of an attempted coup to remain in power.
Supporters of Donald Trump violently stormed Congress on 6 January 2021 as lawmakers met to certify Biden's victory.
Also watch: January 6 hearings: ex-aide paints violent picture of Donald Trump