Under sunny, seventy-degree skies, 18-year-old Mary Anne Smith MacLeod, the future mother of President Donald J. Trump, stepped off the steamship Transylvania onto Ellis Island and into a future that would exceed her wildest dreams. It was 90 years ago, Sunday, May 11, 1930 – Mother’s Day – that Mary MacLeod completed a 9-day journey across the Atlantic Ocean from the small Hebridean Island of Lewis, off the west coast of Scotland. With $50 in her pocket, she would settle with family in the New York City borough of Queens. For 6 years, Mary worked as a nanny before meeting...