MANCHESTER, N.H. (AP) — Republican presidential candidate Nikki Haley on Wednesday pledged to sign a federal ban on abortion but noted that passing one would be highly unlikely without more Republicans in Congress. Although Haley didn’t say how many weeks a federal ban should encompass, her commitment to signing one is the most specific she has been on the issue during her presidential campaign. The former South Carolina governor and U.S. ambassador to the United Nations said “no one has been honest” about how difficult a ban could be to achieve, in a closely divided federal government. “It would take...