South Carolina Gov. Nikki Haley accepted Donald Trump's offer to be his ambassador to the United Nations, a source confirmed to NBC News on Wednesday.<br />Haley is a two-term governor.<br />She initially backed Trump rivals Sen. Marco Rubio and then Sen. Ted Cruz during the GOP battle for a White House nominee.<br />She is the first woman in the state's history to hold the role.<br />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.