In first full day of arguments, House prosecutors claim former president stirred violence with 'the big lie' — his relentless efforts to sow doubts about the 2020 election results

Trial to move forward with 6 Republicans siding with Democrats; proceedings open with jarring video of Capitol siege; process expected to last at least a week

First day of arguments focus on constitutionality of trying an ex-president; proceedings expected to last at least a week

In brief filed with Senate, legal team representing former US president says Democrats are exploiting trauma of Capitol storming for political gain

Why try the former President when he is out of office? What will his lawyers argue? What would acquittal mean? How long will the trial last?

Outgoing Senate Republican majority leader accuses US president of feeding the rioters 'lies' about the election and encouraging them to storm the seat of American democracy

Republican majority leader rejects Democratic attempt to swiftly move forward, ensuring impeachment proceedings won't occur until after Biden's inauguration

Pat Toomey joins Lisa Murkowski in calling for US president to step down as Democratic House Speaker Pelosi notifies colleagues to prepare for impeachment move this week

Michael Atkinson, inspector general for the intelligence community, informed Congress of the anonymous complaint, triggering president's impeachment

Harvard's Noah Feldman, who explained 'impeachability' to House Judiciary Committee, says Founders backed mechanism out of fear leaders would do exactly what Trump is accused of