U.S. Republican presidential contender Nikki Haley, the lone remaining challenger to frontrunner Donald Trump, is continuing to wage a lonely uphill battle against the former president, despite losing the first five nominating contests. The former South Carolina governor and U.N. ambassador, who was handily defeated in Iowa, New Hampshire, Nevada, the U.S. Virgin Islands and her home state of South Carolina, faces her next test against Trump in this week's Super Tuesday primaries. Here are some facts about Haley's life and political career: DAUGHTER OF IMMIGRANTS Haley, 52, gained a reputation in the Republican Party as a solid conservative who...