US President-elect Donald Trump has offered Republican Rep. Elise Stefanik the job of US ambassador to the UN, media reports said.

The New York congresswoman, the fourth-ranking House Republican, has been a strong ally of the president-elect and a major fundraiser for the GOP, reported CNN.

Donald Trump earlier served as the President after the 2016 election.

He is returning to power for the second term after beating his Democratic opponent and US Vice-President Kamala Harris on November 5.

Republican candidate Donald Trump won Arizona on Saturday, clinching a clean sweep in all seven swing states in the recently concluded US Presidential elections.

He ensured the 11 electoral votes to the Republican column after Democrat Joe Biden's 2020 victory.

Donald Trump, who had a career spanning from being a business tycoon to a TV personality, won back the White House once again in a historic US election, becoming not just the 47th American President but also the oldest POTUS to hold the office during his inauguration.

The 78-year-old's campaign as a Republican nominee for one of the most powerful positions in the world has been a dramatic one, especially after he survived two assassination attempts.