The celebrations of America’s 250th birthday, though they offered many wonderful moments, did not provide the sweeping sense of national unity for which some people had hoped. Some Americans found the July 4 weekend too political, too polarizing, and offering too much President Trump. But another event this summer has proved to be a source of infectious patriotism: the World Cup. A tournament that started with so much angst—so much “ugh,” some might say—has turned into a joyful celebration of Am