According to Wikipedia,
Yusuf Tibazi is an American born Moroccan swimmer. He competed at the 2019 World Aquatics Championships. In 2016 Tibazi compete on the 2016 U.S. Olympic Trials, but didn't qualify the 2016 Summer Olympics. In 2018 Tibazi gave Moroccan nationality, and represent his country in 2018 African Swimming Championships where he won 2 medals.