Joe Biden has wasted little time in getting down to business since he first took the oath of office and moved into the White House in January.
In his first 100 days since becoming US President, Biden has overseen a turnaround in America's fortunes on the Covid front with large vaccination numbers, signed on to economic rescue packages worth trillions of dollars and led a return of the US to the world stage. But what has the first few months of Biden's presidency meant for one America's closest allies: Australia?
What's happened in the first 100 days?
Biden first took office on January 20, just two weeks after a group of insurrectionists stormed the US Capitol in a bid to overturn the election result and have a second Trump term.
Upon taking office, Biden indicated tackling the issue of rapidly rising COVID-19 cases was his biggest priority, with the country then recording as many as 3000 deaths per day. The president set a target for 100 million vaccines to be administered in the first 100 days in office, a feat that was passed on March 12.
Just two weeks ago, the country recorded 200 million Covid vaccines administered during the first 100 days of Biden's presidency.
The president also helped to oversee a $2.5 trillion economic relief package, which aimed to help with the COVID-19 recovery.
Among those measures were direct payments of $1800 (Australian) to most adults, as well as extending emergency unemployment benefits until September. Biden also rejoined America to the Paris Climate Accords and removed many executive orders put in place by the Trump administration, such as travel bans from majority Muslim countries.
The new president also hosted 40 leaders from around the world for a virtual climate summit, while announcing the US would commit to a new target of a 50 per cent reduction in carbon emissions by 2030, based on 2005 levels. He also announced all US troops would completely withdraw from Afghanistan by September 11 this year.
How has Biden fared and how have people reacted?
The first 100 days of a four-year presidential term may seem an arbitrary amount of time, but it is seen by many as an indication of a president's agenda and how they choose to govern.
The use of the first 100 days as a marker harkens back to Franklin Roosevelt's first few months in office in 1933, when he instituted a range of reforms to rescue the country following the Great Depression, with little opposition from Congress.
Public perception of the first 100 days is viewed as a critical indicator of a new president's performance, and Biden is outperforming his predecessor on that front.
Recent opinion polls by the organisation Gallup showed a 56 per cent approval rating for Biden in the first 100 days, while Trump had just 41 per cent at the same milestone.
However, Biden's approval levels are still slightly below that of Barack Obama (63 per cent) and George W Bush (59 per cent).
Emeritus professor and former head of the political science department at the Australian National University, John Hart, said many have been surprised by Biden's performance.
"People have been surprised with the boldness of his proposals," Dr Hart said.
"He has been very successful in using executive orders to overturn the worst effects of the Trump presidency. His general performance has surprised a lot of people who may have thought he was over the hill, and he has been very responsive to America's needs."
What does this mean for Australia?
The arrival of Joe Biden as president has signalled a return to some of the diplomatic norms between the two countries that were in place before the arrival of Donald Trump in the White House.
While it may be back to business as normal between the Australia and the US, some of the policy stances of the Biden administration have painted Australia into a corner. Among them is climate change, where the US has committed to ambitious new targets to cut carbon emissions, whereas Australia has been seen as languishing in the area.
"The critical issue is climate change and America has put Australia into a difficult position," Dr Hart said.
"America under Biden won't back off its position to keep Australia happy.
"Biden will start pressing Australia to be more responsible, and if the Australian government doesn't respond, it will lead to some strains, but I don't see the alliance being at risk."
However, while there may be tensions around climate change stances, Dr Hart said Australia had a major ally in America and President Biden over trade disputes with China.
"There is a lot of unity between the US and Australia on China," he said.
"The actions of China towards Australia are despicable and over the top. I don't know what direction China will take, because the US has added its support behind Australia in the trade war."
Where to for the Australia-US relationship?
Joe Biden becoming president has led to a rekindling of the US-Australia relationship and more standard diplomatic channels between the two countries reopening again.
"Basically, the US has gone back to the pre-Trump era when it respected its alliances and cared for alliances and tried to exert leadership," Dr Hart said.
"That's what Biden has reverted to, but given the whole focus on climate change, it has put Australia into an awkward position."
The emeritus professor said while a federal election could still be some time away, a change of government would potentially lead to a stronger relationship between the Biden administration and Australia.
"A Labor government may be more compatible with the American ideas and goals and policies under Biden," he said.
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