But with U.S. swimmers struggling at the World Championships , is that dominance in jeopardy as the Rio Games approach ?
America 's dominance at recent Summer Olympic games has boon rooted on the track and in the pool .
With U.S. swimmers struggling at the World Championships , is that dominance in jeopardy as the Rio Games approach ?
America 's dominance at recent Summer Olympic games has boon rooted on the track and in the pool .