How Donald Trump’s second impeachment will unfold

Members of the National Guard stand inside anti-scaling fencing that surrounds the Capitol (Alan Fram/AP)

President Donald Trump is on the verge of becoming the first president to be impeached twice, as politicians move quickly to punish him over last week’s deadly US Capitol attack.

Mr Trump’s fiery speech at a rally just before the January 6 riot is at the centre of the impeachment charge against him, even as the falsehoods he spread for months about election fraud are still being championed by some Republicans.