Washington — Nikki Haley, the former governor of South Carolina and U.S. ambassador to the United Nations, announced Tuesday that she will make a bid for the White House, becoming the first Republican to challenge former President Donald Trump for the party's nomination. Haley, who served under Trump, made the announcement in a video posted online, in which she declared that "it's time for a new generation of leadership." "I'm Nikki Haley, and I'm running for president," she says at the close of the video. The daughter of Indian immigrants, Haley was born in Bamberg, South Carolina, and would go...