Mr Joe Biden was formally recognised by Congress as the next US president early on Thursday, ending two months of failed challenges by his predecessor, Mr Donald Trump, that exploded into violence at the US Capitol as lawmakers met to ratify the election result.
The Democratic President-elect’s victory was sealed after House and Senate members fended off a final round of objections to the Nov 3 election outcome raised by a handful of Republicans on Mr Trump’s behalf.
President Trump on Thursday promised an orderly transition.
“Even though I totally disagree with the outcome of the election, and the facts bear me out, nevertheless there will be an orderly transition on January 20th,” Mr Trump said in a statement posted on Twitter by White House spokesman Dan Scavino.
Trump had repeated his pledge that he would never concede at a rally earlier Wednesday. He had pressured lawmakers to object to the results in what is normally a routine process, and urged Vice-President Mike Pence to take the extraordinary step of rejecting states outright.
Instead, Mr Pence presided over the counting of electoral votes, which resumed after order was restored to the Capitol and ended early on Thursday.
A group of Republicans had prepared objections, perhaps to half a dozen states, but the movement largely fizzled.
In the Scavino tweets, Mr Trump added, “I have always said we would continue our fight to ensure that only legal votes were counted. While this represents the end of the greatest first term in presidential history, it’s only the beginning of our fight to Make America Great Again!”
The proceedings were disrupted for several hours as pro-Trump demonstrators overran police lines, besieged the House chamber and entered the Senate chamber, sending lawmakers fleeing for safety.
After authorities regained control of the Capitol complex, Congress returned to work on Wednesday evening, holding two rounds of votes that culminated in affirmation of Mr Biden’s win early Thursday.