Biden said that the US will be part of WHO's fight against the coronavirus.
The president said he will be signing a number of executive orders over the next several days of the week.
I will not talk about it until I talk to him. But it was generous, Biden told reporters in the Oval Office of the White House
Speaking shortly after taking oath as the 46th President of the United States, 78-year-old Biden also pledged to repair America's global alliances, which suffered during his predecessor Donald Trump's four-year regime.
Harris, the 49th US Vice President, will serve as the deputy of President Joe Biden, 78, who also took the oath of office, becoming the 46th US President.
The 78-year-old veteran Democrat leader was administered the oath of office by Chief Justice John Roberts at the West Front of the Capitol -- the traditional location for presidential inaugural ceremonies where the deadly violence took place just two weeks ago.
In opting to wear the dress designed by Christopher John Rogers and Sergio Hudson, Harris has sent her own message to the country that Black designers have arrived on the scene.
Biden and Harris along with their families attended Mass at The Cathedral of St Matthew the Apostle. They were joined by bipartisan congressional leaders including House Speaker Nancy Pelosi, Senate Majority Leader Chuck Schumer, Senate Minority Leader Mitch McConnell, House Minority Leader Kevin McCarthy and Senator and JCCIC Chair Amy Klobuchar.
Chief Justice John Roberts will administer the oath of office to Biden just after the clock strikes 12 (local time) at the West Front of the Capitol -- the traditional location -- under the unprecedented security umbrella of more than 25,000 National Guards, who have transformed the capital into a garrison city, mainly because of the threat of violent protest by Trump's supporters.
The Capitol Hill, the complex comprising of US Congress and its buildings, was briefly put under lockdown on Monday due to "an external security treat", local police said after a fire was reported a few blocks away.
More than 25,000 National Guards have been deployed along with thousands of local police personnel and those from other security agencies. The area in and around Capitol Hill, a large part of Pennsylvania Avenue and the White House has been made out of bounds for the general public with eight-feet high iron barricades being erected.
Pictures of thousands of Kolam tiles were on Saturday woven into a video to welcome Biden and Harris in the spirit of 'Presidency for All' and to showcase the multi-cultural heritage of America.
It is also for the first time ever that so many Indian-Americans have been roped into a presidential administration ever before the inauguration. Biden, a Democrat, is still quite far away from filling all the positions in his administration.
In December, Aisha Shah was named as Partnerships Manager at the White House Office of Digital Strategy.
Friday's call was the first time Pence, 61, and Harris, 56, had an one-to-one conversation since their vice presidential debate in October last year. It was also the first direct contact between the two leaders since the November 3 presidential election.
Biden's proposal also sets aside USD 20 billion for a national vaccination programme and USD 50 billion to scale up coronavirus testing.
Verma, who was born in India, grew up in Ohio and the Central Valley of California. She served as an audience development and content strategist on the Biden-Harris campaign, the transition team said on Thursday.
The Justice Department also announced on Thursday evening that the FBI had received more than 140,000 tips identifying rioters and had opened about 200 subject case files.
The IMF believes the farm laws passed by the Indian government have the potential to represent a significant step forward for agricultural reforms, but a social safety net is needed to protect those who might be adversely impacted during the transition to the new system, a spokesperson of the global lender said in Washington.
Lady Gaga will perform the national anthem. There will be a musical performance by Lopez, who has used her voice during the coronavirus pandemic to speak out against its disproportionate toll on minority communities.