US President-elect Joe Biden has condemned Donald Trump's refusal to accept defeat in the presidential election, saying it sent "a horrible message about who we are as a country", APA reports citing BBC.
Mr Biden said he was confident Mr Trump knew he was not going to win and had shown "incredible irresponsibility".
There was a fresh setback for the president as Georgia's recount upheld Mr Biden's victory in the state.
Mr Trump has launched lawsuits alleging unsubstantiated election fraud.
All but one of Mr Trump's legal challenges has failed to make any real headway.
Mr Biden's victory margin in the public vote overall stands at more than 5.9 million. His victory in the US Electoral College system, which determines who becomes president, is projected to be 306 to 232.