When Donald Trump stood on Irish soil and declared his wish for a united Ireland, he stepped into one of the oldest and most carefully tended constitutional wounds in the English-speaking world. The partition of Ireland has shaped a century of politics, peace agreements, and identity on both islands, and an American president's casual endorsement of one side of that question carries weight far beyond the sentiment expressed. His words, spoken during a two-day visit, rippled swiftly into London and Belfast, reminding the world that some questions, however dormant they appear, are never truly se