“Just for certain reasons,” she pondered, “it’s something I have to think about.” Certain reasons — like the question of her nationality. The 26-year-old midfielder, a Scot, faced an awkward decision after agreeing to represent what is known as “Team GB” for the first time. Representing her country previously has only meant singing “Flower of Scotland” before kickoff. The dilemma helps explain the challenges Britons face over their national identities — particularly for a proud Scot like Weir — and in forming unified sports teams. If it wasn’t for the Olympics, Weir would never be playing soccer for Britain. Instead, as she did at the 2019 Women’s World Cup, she’d represent the saltire of Scotland — a nation with its own legal system and church.