Gov. Nikki Haley accepts Trump offer to be ambassador to United Nations: Source

South Carolina Gov. Nikki Haley has accepted Donald Trump's offer to be his ambassador to the United Nations, a source familiar with the president-elect's transition process confirmed to NBC News on Wednesday.

Haley, 44, is a two-term governor. She initially backed Trump rivals Sen. Marco Rubio and then Sen. Ted Cruz during the GOP battle for a White House nominee.

She is the first woman in the state's history to hold the role and only the nation's second Asian-American governor.

The daughter of immigrants from India, Haley served three terms in South Carolina's State House before winning the governorship in 2010 and again in 2014.

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Nikki Haley through the years
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Nikki Haley through the years

South Carolina Gov. Nikki Haley, nominee to be the US ambassador to the United Nations, walks through the Capitol to the Senate subway on Thursday, Jan. 12, 2017.

(Photo By Bill Clark/CQ Roll Call)

Former South Carolina Governor Nikki Haley testifies before a Senate Foreign Relations Committee confirmation hearing on her nomination to be to U.S. ambassador to the United Nations at Capitol Hill in Washington, U.S., January 18, 2017.

(REUTERS/Carlos Barria)

Delegates pose for pictures with South Carolina Governor Nikki Haley (C) on the floor during the third session of the Republican National Convention in Cleveland, Ohio, U.S. July 20, 2016.

(REUTERS/Jonathan Ernst)

U.S.Sen. Ted Cruz (R-TX) speaks with South Carolina Gov. Nikki Haley at the Federalist Society, 2016 National Lawyers Convention at the Mayflower Hotel, on November 18, 2016 in Washington, DC.

(Photo by Mark Wilson/Getty Images)

Republican South Carolina Governor Nikki Haley delivers remarks at the Federalist Society 2016 National Lawyers Convention in Washington, U.S., November 18, 2016.

(REUTERS/Gary Cameron)

South Carolina Governor Nikki Haley (L) and U.S. Republican presidential candidate Marco Rubio react on stage during a campaign event in Chapin, South Carolina February 17, 2016. Haley announced her endorsement of Rubio for the Republican presidential nomination.

(REUTERS/Chris Keane)

Escorted by staff and security, South Carolina Governor Nikki Haley (C) moves from one television interview to another across from the historic Emanuel African Methodist Episcopal Church June 19, 2015 in Charleston, South Carolina. Haley called for the death penalty for Dylann Storm Roof, 21, of Lexington, South Carolina, if he is found guilty of murdering nine people during a prayer meeting at the church Wednesday night. Among the dead is the Rev. Clementa Pinckney, the pastor of the church which, according to the National Park Service, is the oldest black congregation in America south of Baltimore.

(Photo by Chip Somodevilla/Getty Images)

South Carolina Gov. Nikki Haley, right, greets U.S. Sen. Tim Scott, R-SC, at the first church service four days after a mass shooting that claimed the lives of nine people at the historic Emanuel African Methodist Church June 21, 2015 in Charleston, South Carolina. Chruch elders decided to hold the regularly scheduled Sunday school and worship service as they continue to grieve the shooting death of nine of its members including its pastor earlier this week.

(Photo by Paul Zoeller-Pool/Getty Images)

South Carolina Governor Nikki Haley speaks to press outside the Emanuel AME Church June 19, 2015 in Charleston, South Carolina.US police arrested a white high school dropout Thursday suspected of carrying out a gun massacre at one of America's oldest black churches, the latest deadly assault to fuel simmering racial tensions. Authorities detained 21-year-old Dylann Roof, shown wearing the flags of defunct white supremacist regimes in pictures taken from social media, after nine churchgoers were shot dead during a Bible study class on Wednesday evening.

(BRENDAN SMIALOWSKI/AFP/Getty Images)

Escorted by staff and security, South Carolina Governor Nikki Haley (C) moves from one television interview to another across from the historic Emanuel African Methodist Episcopal Church June 19, 2015 in Charleston, South Carolina. Haley called for the death penalty for Dylann Storm Roof, 21, of Lexington, South Carolina, if he is found guilty of murdering nine people during a prayer meeting at the church Wednesday night. Among the dead is the Rev. Clementa Pinckney, the pastor of the church which, according to the National Park Service, is the oldest black congregation in America south of Baltimore.

(Photo by Chip Somodevilla/Getty Images)

South Carolina Governor Nikki Haley holds a news conference with fellow members of the Republican Governors Association at the U.S. Chamber of Commerce February 23, 2015 in Washington, DC. Republican and Democratic governors met with U.S. President Barack Obama at the White House Monday during the last day of the National Governors Association winter meeting.

(Photo by Chip Somodevilla/Getty Images)

South Carolina Gov. Nikki Haley waves on stage during the Republican National Convention at the Tampa Bay Times Forum on August 28, 2012 in Tampa, Florida. Today is the first full session of the RNC after the start was delayed due to Tropical Storm Isaac.

(Photo by Mark Wilson/Getty Images)

Former Florida Governor and potential GOP presidential candidate Jeb Bush walks with South Carolina Governor Nikki Haley during a visit to Sistercare, a non-profit that aids domestic violence victims and their children on March 17, 2015 in Columbia, South Carolina. Bush announced in December that he 'actively explore' a presidential run in 2016. He is currently on a two day tour through South Carolina and will attend several fundraising events.

(Photo by Richard Ellis/Getty Images)

Nikki Haley applauds the Claflin College Choir after their performance during her inauguration as governor of South Carolina, Wednesday, January 12, 2011, in Columbia, South Carolina.

(Tim Dominick/The State/MCT via Getty Images)

US Republican Governor of South Carolina Nikki Haley speaks at the Conservative Political Action Conference (CPAC) in National Harbor, Maryland, on March 15, 2013.

(NICHOLAS KAMM/AFP/Getty Images)

Republican candidate for South Carolina Governor Nikki Haley (R) smiles along with her husband Michael Haley (L) and daughter Rena (C) as they watch the runoff election results at the Columbia Sheraton on June 22, 2010 in Columbia, South Carolina. Haley defeated Rep. Gresham Barrett in a runoff election.

(Photo by Chris Keane/Getty Images)

South Carolina Gov. Nikki Haley speaks to the media prior to the NASCAR Sprint Cup Series Bojangles' Southern 500 at Darlington Raceway on May 12, 2012 in Darlington, South Carolina.

(Photo by Rainier Ehrhardt/Getty Images for NASCAR)

Republican presidential candidate, former Massachusetts Gov. Mitt Romney gives a birthday cake to South Carolina Gov. Nikki Haley during a campaign rally at Charleston Area Convention Center on January 20, 2012 in North Charleston, South Carolina. Romney continues to campaign for votes in South Carolina ahead of their primary on January 21.

(Photo by Joe Raedle/Getty Images)

Nikki Haley speaks to supporters as she comes onto stage during an election party for Republican South Carolina Governor candidate Nikki Haley at the State Museum on June 22, 2010 in Columbia, South Carolina. Haley defeated Rep. Gresham Barrett in a runoff election.

(Photo by Chris Keane/Getty Images)

Republican candidate for South Carolina Governor Nikki Haley (R) smiles along with her husband Michael Haley (L) and daughter Rena (C) as they watch the runoff election results at the Columbia Sheraton on June 22, 2010 in Columbia, South Carolina. Haley defeated Rep. Gresham Barrett in a runoff election.

(Photo by Chris Keane/Getty Images)

South Carolina State Rep. Nikki Haley from Lexington, pictured on May 14, 2009, is launching a bid to become South Carolina's first female governor.

(Photo by Tim Dominick/The State/MCT via Getty Images)

UNITED STATES - JUNE 22: Nikki Haley

(Photo By Douglas Graham/Roll Call/Getty Images)

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Haley's limited foreign policy experience is likely to draw scrutiny during Senate confirmation hearings for the Cabinet-level position.

If confirmed, Haley would succeed Samantha Power, who served as President Barack Obama's U.N. ambassador since 2013.

Trump's selection of Haley caps a remarkable year for their political relationship. They started 2016 with a fight and are ending it as allies in a nascent Trump administration.

The pair feuded in January after Haley's Republican response to President Barack Obama's State of the Union, during which she took a thinly-veiled swipe at Trump, warning against "the siren call of the angriest voices."

Haley told TODAY's Matt Lauer the following morning that then-candidate Trump "has definitely contributed to what I think is just irresponsible talk."

"If we have citizens who are law-abiding, who love our traditions, who do everything to be productive citizens in America, they should feel welcome in this country," Haley said. "The reason this country is so great is because the fabric of this country was made by immigrants, and its legal immigrants."

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Twitter reacts to Trump describing cabinet picks as 'finalists'
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Twitter reacts to Trump describing cabinet picks as 'finalists'
@realDonaldTrump does this mean there is a new season of the apprentice or
@realDonaldTrump This isn't a contest, dude. You're literally about to run the USA. Are you serious?
@realDonaldTrump doesn't sound so organized? Is this the apprentice???
.@realDonaldTrump maybe let America text in and vote then wait a day for the live results show?
@realDonaldTrump Welcome to Cabinet Apprentice, The Reality Show. Donald will give roses to all the "finalists"
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In February, she called Trump "everything a governor doesn't want in a president." The following month Haley endorsed Rubio in the South Carolina primary. Following Rubio's loss and subsequent withdrawal from the race, Haley said it was her "hope and prayer" that Cruz would win the Republican nomination.

By the Republican National Convention in July, though, Haley had warmed enough to Trump to say she planned to vote for him in a tepid endorsement to MSNBC's Jacob Soboroff.

"I would not be here if I didn't want to make sure that Hillary [Clinton] was not going to be the next president," Haley said in July.

Haley is married to a captain in the Army National Guard who served in Afghanistan, and has two teenage children, according to her biography on the state's website.

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