WASHINGTON: Joe Biden reached the two-week mark since becoming president-elect, with US President Donald Trump stinging from back-to-back setbacks in his desperate, unprecedented bid to undo his election defeat. Biden, a Democrat, is preparing to take office on Jan 20, but Trump, a Republican, has refused to concede and is seeking to invalidate or overturn the results through lawsuits and recounts in a number of states, claiming - without proof - widespread voter fraud.

That effort, which critics call an unparalleled push by a sitting president to subvert the will of voters, has met with little success. Trump's campaign has suffered a string of legal defeats and appears to have failed to convince key fellow Republicans in states that he lost, such as Michigan, to buy into his unfounded conspiracy theories.

Trump's bid to cling to power appeared ever more tenuous on Friday after Georgia Secretary of State Brad Raffensperger announced a manual recount and audit of all ballots cast in the southern state had confirmed Biden as the winner there. "Numbers don't lie," said Raffensperger, a Republican. "The numbers reflect the verdict of the people."

A pair of Michigan Republican leaders delivered another blow when they declared on Friday night after a White House meeting with Trump: "We have not yet been made aware of any information that would change the outcome of the election in Michigan."

Trump, in his first public comments in days about the election outcome, again asserted "I won" during a White House event on lowering drug prices earlier on Friday. "Big pharma ran millions of dollars of negative advertisements against me during the campaign - which I won, by the way, but you know, we'll find that out," Trump said. He exited the briefing room without taking questions. The president spent most of the day hunkered down in the White House, fuming about the "Rigged Election" and retweeting conservative personalities - including a QAnon conspiracy supporter - arguing that his rival's victory was fraudulent.

After a series of court defeats, the Trump team is resting its hopes on getting Republican-controlled legislatures in battleground states won by Biden to set aside the results and declare Trump the winner, according to three people familiar with the plan. It is a long-shot effort focusing on Michigan and Pennsylvania for now, but even if both those states flipped to the president he would need to overturn the vote in another state to vault ahead of Biden in the Electoral College. Such an event would be unprecedented in modern US history.

Pressure for Trump to start the formal transition process has mounted, with a few more Republicans voicing doubts over his unsubstantiated claims of fraudulent voting. There is a "right way and a wrong way" for Trump to contest what he sees as election irregularities, Susan Collins, the Maine Senator, said in a statement. "The right way is to compile the evidence and mount legal challenges in our courts. The wrong way is to attempt to pressure state election officials."

The General Services Administration, run by a Trump appointee, still has not recognized Biden's victory, preventing his team from gaining access to government office space and funding normally provided to an incoming administration. Critics say Trump's refusal to concede has serious implications for national security and the fight against the coronavirus, which has killed more than 250,000 Americans.

Shut off from government funds, Biden's team on Friday ramped up their fundraising for the transition. Having taken in more than an initial $7 million target largely from wealthy donors, they turned to their campaign's vast mailing list of small donors, asking - according to a fundraising note - for contributions as small as $25.

Even as the Biden team remains unable to access resources and government experts to help assume management of the $4 trillion US government on Inauguration Day, Trump officials have been making unexpected changes to programs, policies and agencies that could affect the incoming administration.

The Treasury Department's surprise demand that the Federal Reserve return hundreds of billions of dollars in credit designed to back loans to businesses drew a sharp response from Biden's team on Friday, who called it "deeply irresponsible", given the country's accelerating COVID cases and new lockdowns. - Agencies