US President Joe Biden signed a series of executive orders to undo US President Donald Trump's legacy during his first day in office on Wednesday, signing several executive orders regarding immigration, climate change, racial equity and the handling of the COVID-19 pandemic.

'I'm proud of today's executive actions,' Biden said on Wednesday evening.

'I'm going to start by keeping the promises I made to the American people.' Specifically, Biden has already signed executive orders to end funding for the border wall, to reverse the Muslim travel ban, to reenter the World Health Organization (WHO), to rejoin the Paris Climate Agreement and repeal the approval of the Keystone XL oil pipeline, AP reported.

'There's no time to start like today,' Biden told reporters in the Oval Office, CNN reported.

'I'm going to start by keeping the promises I made to the American people.' Trump had declared a national emergency on the southern border to divert funds for the construction of a border wall.

On January 2017, the Trump administration first introduced a ban prohibiting entry of foreign nationals from seven Muslim majority countries, although court challenges forced the administration to modify the ban multiple times.