US President Donald Trump has said his speech before last week's deadly Capitol riot, when he urged his supporters to march on Congress, was "totally appropriate".
Trump dismissed as "ridiculous" efforts by Democrats in Congress to impeach him for inciting insurrection, reports the BBC.
He leaves office on 20 January, when President-elect Joe Biden is sworn in.
Democrats in the House of Representatives say a vote to impeach the president will happen on Wednesday.
If the vote in the House is carried, Trump will become the first president in US history to be impeached twice. However, the impeachment will only lead to his removal from office if a two-thirds majority votes in favour in the Senate.
That would need the assent of a substantial number of Republicans and so far, few have shown any willingness to vote against a president from their own party.The House will vote first to ask Vice-President Mike Pence to invoke constitutional powers to remove Trump from office - an idea Pence is said to oppose.
Calls for Trump's resignation, removal from office or impeachment have grown among Democrats and some Republicans in the days following the riots in Congress in which five people died.