Former President Donald Trump easily won Tuesday’s Michigan primary‚ continuing his march toward the Republican Party nomination. But his opponent‚ Nikki Haley‚ continued to score a significant enough percentage of the vote so as to raise questions about the former president’s standing in the general election. Trump appeared on path to win roughly 70 percent in the state’s GOP primary. That will increase the pressure on Haley to exit the race‚ though the former U.N. ambassador has said...