Donald Trump’s national field director quit late last night as the billionaire businessman made changes to his campaign apparatus on the eve of an important primary vote in New York. Stuart Jolly is a retired Army Lieutenant who came to the Trump campaign as a close ally of campaign manager Corey Lewandowski . They both worked at Americans For Prosperity and joined the Trump campaign during it’s infancy. The New York Times interprets the shake-up as a bad sign for Lewandowski: But the resignation was seen as a sign of distress among those loyal to Mr. Lewandowski about recent changes...