CONWAY, South Carolina — Former President Donald Trump made a fresh jab at his GOP opponent Nikki Haley’s husband during a rally Saturday afternoon, questioning his whereabouts as he’s deployed overseas. Shortly after Trump’s remarks, Haley said at a rally in Gilbert, South Carolina, that she was proud of her husband’s service. The former South Carolina governor issued a challenge directly to Trump. Haley has gone after Trump with new force since the primary’s focus moved to her home state of South Carolina. But I’ll tell you: We can do better.”Trump, the front-runner for the nomination, is polling well ahead of Haley in the South Carolina primary.