18-year-old Campbell Webster had his bagpipes seized while crossing the US-Canada border, just days before he was due to fly to Scotland for the World Pipe Band Championships. That’s because the pipes are made out of ivory, and new rules about the ivory trade are tripping up musicians like him.18-year-old Campbell Webster had his bagpipes seized while crossing the US-Canada border, just days before he was due to fly to Scotland for the World Pipe Band Championships. That’s because the pipes are made out of ivory, and new rules about the ivory trade are tripping up musicians like him.