The incoming Democratic president will host the top Democrats in the House and Senate Friday afternoon at his makeshift transition headquarters in a downtown Wilmington, Delaware, theater.
Michigan's four-member state canvassing board, made up of two Democrats and two Republicans, is expected to meet Monday to determine the results of the election after receiving totals from all 83 counties.
"Numbers don't lie", said Brad Raffensperger, the Republican secretary of state in Georgia - which was poised Friday to certify Biden's win.
'It sends a frightful message about who we are as a country, ' Biden said.
Trump fired back at Romney Friday morning, writing on Twitter that the senator is a "RINO", Republican in name only, and saying, "I'm sure, however, that he feels he got slaughtering by Obama "fair and square".
The outgoing president though has bunkered down in the mansion, and for almost two weeks has done something unimaginable one month ago: shunned the media.
Romney was the only Republican senator to vote to convict Trump during his impeachment trial earlier this year and has been a frequent critic of the President.
Results were posted on the secretary of state's website. State lawmakers are being told to defy the popular mandate that the Joe Biden-Kamala Harris ticket won and award Michigan's 16 electoral votes to Trump on the grounds the election was tainted, a contention Trump's team has been unable to prove in court.
His rebuke of Mr Trump came on the same day that the President invited Republican state leaders in MI to the White House to discuss their efforts to stop the certification of the election results in the state.
Biden won MI by 155,000 votes, a margin more than 10 times higher than Trump's state victory in 2016. In three separate lawsuits in Pennsylvania and cases in Arizona and Nevada, Trump's lawyers have jettisoned sweeping claims of fraud, instead focusing on relatively small-bore complaints.
Covid 19 coronavirus: UK's Johnson in quarantine but declares himself fit, working
The quarantine requirement comes as Johnson and the United Kingdom begins discussions over a post-Brexit trade deal with the European Union.
Biden said Thursday that Trump's attempted coercion of the MI delegation is "going to be another incident where he will go down in history as being one of the most irresponsible presidents in America history".
Despite the setbacks, the Trump campaign has not abandoned its legal efforts.
Burgess Owens, who won the race in Utah's 4th Congressional District, believes President Donald Trump will accept the results of the election if his claims of widespread voter fraud don't bear fruit, but he believes that the issue deserves a thorough investigation.
Trump is doing this by pressuring Republican officials in states like Michigan, Georgia, and others, where typical and minor election irregularities are being pointed to as signs of a conspiracy against Trump.
Biden, meanwhile, is due on Friday to meet Democratic leaders in Congress, House of Representatives Speaker Nancy Pelosi and Senate Minority Leader Chuck Schumer after spending most of the week with advisers planning his administration.
"This is publicly available, if the former vice-president would like to read through it", McEnany said at her first briefing since the election.
Biden held an online meeting with Democratic and Republican governors of 10 states on Thursday to discuss a response to the surging number of infections across the United States. Trump not only would need three state legislatures to intervene against vote counts as they stand now, but then also have those actions upheld by Congress and, nearly certainly, the Supreme Court.
Trump's campaign will likely demand yet another recount.