US President Donald Trump plans to nominate Heather Nauert, the chief State Department spokeswoman, as his next envoy to the UN to replace Indian-American Nikki Haley, according to media reports.

In October, Haley announced that she was leaving the post by the end of the year. Haley has served nearly two years in the post.

Haley is the first Indian-American to ever appointed to a Cabinet position in any US presidential administration.

Nauert had been the favourite after Haley, 46, announced that she would leave the job.

It is expected the president will make the announcement on Friday.

Nauert, formerly a Fox News anchor, came to the administration in 2017 with no prior government experience.

She will have to be confirmed by the Senate to secure her position, where Democrats will likely grill Nauert on her qualifications for the position.

In her new role, Nauert would be responsible for maintaining international support for economic sanctions against North Korea and continuing the Trump administration’s unflinching support for Israel in the face of mounting scrutiny at the UN, reports The Washington Post.

A former news reporter for ABC, Nauert joined Fox in 1996, originally as a correspondent and later as a co-host for “Fox and Friends”.

Nauert has earned a reputation as a stalwart defender of the President even through the turbulent tenure of Trump’s first Secretary of State, Rex Tillerson.

A senior administration official told The Washington Post said Nauert would be “an outstanding advocate for the American people at the UN”.

“She’s hard-working, she’s smart and she never gives up in advancing an agenda that works for the US,” the official said.

(With agency inputs)