Joe Biden's meeting on Thursday with a group of Democratic and Republican governors is his latest attempt to fight through President Donald Trump's unprecedented attempt to block the president-elect's transition to power.

Biden and Vice President-elect Kamala Harris planned a virtual session in the afternoon with the National Governors Association's leadership team, which includes five Republicans and four Democrats. All the Democrats and a majority of the Republicans involved have acknowledged Biden as the winner of the White House election.

One expected participant, Gov. Larry Hogan, R-Md., told The Associated Press recently that Trump's wild and unsupported claims of widespread voter fraud were “dangerous” and “embarrassing.”

The highest-ranking Republican on the NGA's executive committee, Asa Hutchinson of Arkansas, said over the weekend that Biden would be the next president and he called on the Trump administration to give Biden access to the intelligence briefings he needs in order to be fully prepared to lead the country on January 20, Inauguration Day.

So far, the governors have not swayed the Republican president.

Before Biden's meeting, Trump came out with a new round of false claims of voter fraud in key states, even as courts continue to reject his challenges, and a small, but growing number of Republican officeholders publicly begin to accept Biden's victory.

Beyond being a pillar of democracy, the peaceful transfer of power after an election is especially critical this year given the extraordinary governing challenges Biden will inherit in just nine weeks. The US is struggling through the worst public health crisis in a century, state and local government are facing massive budget shortfalls, and millions of Americans remain out of work.

But more than two weeks after the November 3 election, the Trump administration is refusing to let Biden receive detailed briefings on national security and pandemic planning that leaders in both parties say are vital to ensure Biden can govern effectively on Day One.

With Trump dug in and Republicans on Capitol Hill largely unwilling to challenge him, Biden has been forced to turn to diverse collection of outside allies to ratchet up the pressure on Trump to concede.

The CEOs of America's largest companies have released a statement recognising Biden and Harris as the clear winners. The heads of the American Hospital Association, the American Medical Association and the American Nurses Association issued a joint statement on Tuesday urging the Trump administration to share “all critical information related to COVID-19” with Biden. Not doing so, they warned, would jeopardise American lives.

Trump is showing no signs of giving in.

He is getting nowhere in the courts, and his scattershot effort to overturn Biden's victory is shifting toward obscure election boards that certify the vote. The battle is centred in the states that sealed Biden's win. In Michigan, two Republican election officials in the state's largest county initially refused to certify results despite no evidence of fraud.

The officials then backtracked and voted to certify before flipping again on Wednesday and saying they “remain opposed to certification.” Some Republicans have called on the GOP statewide canvassers to so the same as Trump applies pressure from his social media accounts.

Michigan Governor Gretchen Whitmer, a Democrat, planned to participate in the meeting with Biden.